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Showing posts with label Java Programming. Show all posts
Showing posts with label Java Programming. Show all posts

Monday, October 25, 2010

Java Programming








Multiple Choice Multiple Answer
Question
What all the run( ) method can do?
Correct Answer
Can call other method , Declare variable
Your Answer
Can call other method , Declare variable

True/False
Question
Each class in java can have a finalizer method.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Method definition has four parts, they are :-
Correct Answer
Name of the method , Type of object , List of parameters
Your Answer
Name of the method , Type of object , List of parameters , Class

Multiple Choice Single Answer
Question
Which is the default access modifier for an interface method?
Correct Answer
public
Your Answer
main

Multiple Choice Multiple Answer
Question
Which are the two threads of java?
Correct Answer
mainthread( ) , childthread( )
Your Answer
mainthread( ) , childthread( )

Multiple Choice Single Answer
Question
Which operator is used to create and concatenate string?
Correct Answer
Addition operator(+).
Your Answer
Addition operator(+).

Select The Blank
Question
The ________ repeats a set of code at least once before the condition is tested.
Correct Answer
Do-while loop
Your Answer
Do-while loop

Multiple Choice Single Answer
Question
Which statement will always execute the body of a loop at least once?
Correct Answer
Do
Your Answer
Do

Select The Blank
Question
Double data type uses ________ to store a value
Correct Answer
64 bits
Your Answer
64 bits

True/False
Question
A thread's priority is used to decide when to switch from one running thread to the next, this is called as the context switch.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What are the Logical operators?
Correct Answer
OR() , AND(&) , XOR(^)
Your Answer
OR() , AND(&) , XOR(^)

Match The Following
Question
Correct Answer
Your Answer
The data, or variable, defined within a class
Instance variable.
Instance variable.
General form of Cast
(target--type)value
(target--type)value
Determine the relationship that one operand has to the other
Relational Operator
Relational Operator
The secondary versions of the Boolean AND and OR operators
Short-Circuit Logical Operators
Comparison operator

Multiple Choice Multiple Answer
Question
Which of these lines of code will compile?
Correct Answer
short s = 20; , char c = 32; , double d = 1.4;
Your Answer
short s = 20; , char c = 32; , double d = 1.4;

Select The Blank
Question
Threads define several ________.
Correct Answer
constructors
Your Answer
constructors

True/False
Question
A thread can be blocked when waiting for a resource.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Which cast must be used to convert a larger value into a smaller one?
Correct Answer
Explicit cast.
Your Answer
Explicit cast.

Select The Blank
Question
________ is the logical construct upon which the entire java language is built.
Correct Answer
Class
Your Answer
Method

Multiple Choice Single Answer
Question
What is meant by garbage collection?
Correct Answer
Object is no longer referred to by any variable
Your Answer
Object is no longer referred to by any variable

True/False
Question
Short data type range is -30,376 to 32768.
Correct Answer
False
Your Answer
False

Select The Blank
Question
________method starts a threrad by calling its run method.
Correct Answer
start( )
Your Answer
start( )

Multiple Choice Multiple Answer
Question
Exit statement is optional in which loops in java?
Correct Answer
For , While , Do-while
Your Answer
While , For , Continue

Match The Following
Question
Correct Answer
Your Answer
Exit any loop
Break
Break, continue, return
If
Else
Else
Loop
While
While
Jump
Break, continue, return
Goto

Select The Blank
Question
A ________can implement more than one interface.
Correct Answer
Class
Your Answer
Method

Select The Blank
Question
The most commonly used ________eger type is int.
Correct Answer
int
Your Answer
int

Select The Blank
Question
In ________ statement the value of the expression is compared with each of the literal values in case statements.
Correct Answer
Switch
Your Answer
Switch

Multiple Choice Single Answer
Question
Which statement used inside a set of nested loops, will only break out of the innermost loop?
Correct Answer
Break
Your Answer
Jump

Multiple Choice Multiple Answer
Question
Main thread is important for which two reasons?
Correct Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions

True/False
Question
There is no Global Variable in Java.
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Which are keywords in Java?
Correct Answer
Extends , Synchronized , Sizeof
Your Answer
Synchronized , Sizeof

Select The Blank
Question
There are ________ kinds of Floating point type
Correct Answer
Two
Your Answer
One

Multiple Choice Single Answer
Question
How to change the values of the elements of the array?
Correct Answer
By using array subscript expression
Your Answer
By specifying index number

Multiple Choice Multiple Answer
Question
Which loops can be nested in java?
Correct Answer
While , Do-while , For
Your Answer
While , Do-while , For , Jump

Multiple Choice Multiple Answer
Question
Which are the keywords use in switch statement?
Correct Answer
Case , Default
Your Answer
Case , Default , Exit

Multiple Choice Single Answer
Question
What is a string?
Correct Answer
A combination of characters called as string
Your Answer
A combination of characters called as string

True/False
Question
All the methods declared inside an Interface are abstract.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Which Control Statements allow the program to choose different paths of execution?
Correct Answer
Selection
Your Answer
Jump

Multiple Choice Single Answer
Question
What are primitive data types?
Correct Answer
byte, short, int, long
Your Answer
byte, short, int, long

Select The Blank
Question
The explicit drop of an object reference by setting the value of a variable, whose data type is a reference type of ________.
Correct Answer
Null
Your Answer
Instance

True/False
Question
A suspended thread can then be resumed allowing it to pick up where it left off.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Java's multithreading system is built upon :-
Correct Answer
Thread class , Its methods , Companion interface
Your Answer
Thread class , Its methods , Method

Multiple Choice Single Answer
Question
How array is defined?
Correct Answer
int arr[];
Your Answer
arr[10];

Multiple Choice Single Answer
Question
How do you assign values to variables?
Correct Answer
By using the assignment operator =.
Your Answer
By using the assignment operator =.

True/False
Question
Byte can be Cast to Double Value.
Correct Answer
True
Your Answer
False

Select The Blank
Question
Anything declared ________ can be accessed from anywhere within program.
Correct Answer
Public
Your Answer
Public

Multiple Choice Single Answer
Question
What are the kinds of variables in Java?
Correct Answer
Instance, local, class variables
Your Answer
Varchar, rawtype

True/False
Question
Is it necessary to implement all the methods of an interface while implementing the interface
Correct Answer
False
Your Answer
False
Multiple Choice Multiple Answer
Question
Which are the two threads of java?
Correct Answer
mainthread( ) , childthread( )
Your Answer
mainthread( ) , childthread( )

Multiple Choice Single Answer
Question
How can class be imported from a package to a program?
Correct Answer
import java.packagename.classname
Your Answer
import java.package.class

Multiple Choice Single Answer
Question
Which keyword is used to create an instance of a class?
Correct Answer
new
Your Answer
new

Multiple Choice Single Answer
Question
Multiple Choice Single Response
Correct Answer
Object oriented programming.
Your Answer
Object oriented programming.

Multiple Choice Single Answer
Question
Which is the default access modifier for an interface method?
Correct Answer
public
Your Answer
public

Multiple Choice Single Answer
Question
How multidimensional array is declared?
Correct Answer
int[4] [5];
Your Answer
int[4] [5];

Multiple Choice Multiple Answer
Question
What returns a reference to the thread in which it is called?
Correct Answer
Method , Class , Object
Your Answer
Method , Class , Object

True/False
Question
Casting occurs commonly between numeric types
Correct Answer
True
Your Answer
True

Select The Blank
Question
Start( )executes a call to ________.
Correct Answer
run( )
Your Answer
run( )

True/False
Question
Running threads can be suspended, which temporarily suspends its activity.
Correct Answer
True
Your Answer
True

Select The Blank
Question
A ________ is a subclass of itself.
Correct Answer
Class
Your Answer
Class

Multiple Choice Single Answer
Question
How many concrete classes can you have inside an interface?
Correct Answer
none
Your Answer
none

Multiple Choice Single Answer
Question
Java Applets are intelligent programs means :-
Correct Answer
They can react to user input and dynamically change.
Your Answer
They can react to user input and dynamically change.

Multiple Choice Single Answer
Question
Which of the following can be referenced by 'this' variable?
Correct Answer
The instance variables and methods of a class
Your Answer
The instance variables of a class only

True/False
Question
A thread's priority is used to decide when to switch from one running thread to the next, this is called as the context switch.
Correct Answer
True
Your Answer
True

True/False
Question
Object oriented programming organizes a program around processes acting on data.
Correct Answer
False
Your Answer
False

Multiple Choice Multiple Answer
Question
Which of these lines of code will compile?
Correct Answer
short s = 20; , char c = 32; , double d = 1.4;
Your Answer
short s = 20; , char c = 32; , double d = 1.4;

Select The Blank
Question
________ are stored in hierarchical manner.
Correct Answer
Packages
Your Answer
Packages

Multiple Choice Multiple Answer
Question
What are different data types in java?
Correct Answer
char , double , byte
Your Answer
char , double , byte

Multiple Choice Single Answer
Question
Select the facility provided along with JVM which enhances speed of execution :-
Correct Answer
Just-In-Time (JIT) compiler.
Your Answer
Just-In-Time (JIT) compiler.

Match The Following
Question
Correct Answer
Your Answer
The data, or variable, defined within a class
Instance variable.
Instance variable.
General form of Cast
(target--type)value
(target--type)value
Determine the relationship that one operand has to the other
Relational Operator
Relational Operator
The secondary versions of the Boolean AND and OR operators
Short-Circuit Logical Operators
Short-Circuit Logical Operators

Multiple Choice Multiple Answer
Question
Modulus operator % can be applied to these data types :-
Correct Answer
floating Point , Integer , Character
Your Answer
floating Point , Integer , Character

Multiple Choice Multiple Answer
Question
Expression must be of the data types :-
Correct Answer
Byte , Short , Int
Your Answer
Byte , Short , Int

Select The Blank
Question
For externalizable objects the ________ is solely responsible for the external format of its contents.
Correct Answer
Class
Your Answer
Class

Multiple Choice Single Answer
Question
Using which keyword we can fully abstract a class?
Correct Answer
interface
Your Answer
interface

Select The Blank
Question
The ________ repeat a set of code while the condition is false.
Correct Answer
While loop
Your Answer
While loop

Multiple Choice Multiple Answer
Question
Which of the following are mathematical Expressions?
Correct Answer
(+ +) , (+ =) , (- =)
Your Answer
(+ +) , (+ =) , (- =)

Multiple Choice Single Answer
Question
Which method is used to determine the class of an object?
Correct Answer
getClass( ) method
Your Answer
getClass( ) method

Select The Blank
Question
The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer
Encapsulation
Your Answer
Encapsulation

True/False
Question
Java compiler stores the .class files in the path specified in CLASSPATH environmental variable.
Correct Answer
False
Your Answer
False

Multiple Choice Single Answer
Question
Java was developed at :-
Correct Answer
Sun Microsystems
Your Answer
Sun Microsystems

Multiple Choice Single Answer
Question
What are the kinds of variables in Java?
Correct Answer
Instance, local, class variables
Your Answer
Instance, local, class variables

True/False
Question
If the break statement is omited in switch statement, then execution will continue on into the next case.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Java defines two ways when instantiating an object, such as :-
Correct Answer
Can implement the runnable interface , Can extend the thread class
Your Answer
Can implement the runnable interface , Can extend the thread class

Multiple Choice Multiple Answer
Question
The source for the frist package defines three classes
Correct Answer
Protection , Derived , SamePackage
Your Answer
Protection , Derived , SamePackage

Multiple Choice Multiple Answer
Question
Exit statement is optional in which loops in java?
Correct Answer
While , Do-while , For
Your Answer
While , Do-while , For

Select The Blank
Question
In ________ statement condition is true, then statement 1 is executed.
Correct Answer
If
Your Answer
If

Multiple Choice Single Answer
Question
What are the possible access modifiers while implementing interface methods?
Correct Answer
public
Your Answer
public

Multiple Choice Multiple Answer
Question
Which is a public static member of thread?
Correct Answer
currenthread( ) , mainthread( )
Your Answer
currenthread( ) , mainthread( )

Select The Blank
Question
The ________ repeats a set of code at least once before the condition is tested.
Correct Answer
Do-while loop
Your Answer
Do-while loop

True/False
Question
A thread can be blocked when waiting for a resource.
Correct Answer
True
Your Answer
True

Select The Blank
Question
A ________can implement more than one interface.
Correct Answer
Class
Your Answer
Class

True/False
Question
Boolean values can be cast into any other primitive type.
Correct Answer
False
Your Answer
False

True/False
Question
Constructors can be overloaded like regular methods.
Correct Answer
True
Your Answer
True

Select The Blank
Question
The name of the new thread is specified by ________.
Correct Answer
threadName
Your Answer
threadName

Multiple Choice Single Answer
Question
A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer
Architecture neutral
Your Answer
Architecture neutral

Match The Following
Question
Correct Answer
Your Answer
It can have only one of two possible values
Boolean type
Boolean type
Float hightemp, lowtemp
Float variable declarations
Float variable declarations
Smallest int type
Byte
Byte
Floating point numbers are also known as
Real Numbers
Real Numbers
Multiple Choice Single Answer
Question
What is meant by garbage collection?
Correct Answer
Object is no longer referred to by any variable
Your Answer
Object is no longer referred to by any variable

Multiple Choice Single Answer
Question
How can class be imported from a package to a program?
Correct Answer
import java.packagename.classname
Your Answer
import java.packagename.classname

Select The Blank
Question
The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer
Continue
Your Answer
Continue

Multiple Choice Single Answer
Question
Which Control Statements enable program execution to repeat one or more statements?
Correct Answer
Iteration
Your Answer
Iteration

Select The Blank
Question
The ________ loop is java's most fundamental looping statement.
Correct Answer
While
Your Answer
For

Select The Blank
Question
Java defines ________ Primitive type of data.
Correct Answer
Eight 8 simple types of data: byte, short, int, long (INTEGERS), float, double(FLOATING TYPE), char, and Boolean
Your Answer
Eight

True/False
Question
Boolean data types have only Yes or No value.
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer
Classes , Subclasses , Packages
Your Answer
Classes , Subclasses , Packages

Multiple Choice Single Answer
Question
Java was developed at :-
Correct Answer
Sun Microsystems
Your Answer
Sun Microsystems

Multiple Choice Single Answer
Question
Select the facility provided along with JVM which enhances speed of execution: -
Correct Answer
Just-In-Time (JIT) compiler.
Your Answer
Just-In-Time (JIT) compiler.

True/False
Question
If the break statement is omitted in switch statement, then execution will continue on into the next case.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What are the programming constructs?
Correct Answer
Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop
Your Answer
Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop

Multiple Choice Single Answer
Question
Which statement will always execute the body of a loop at least once?
Correct Answer
Do
Your Answer
Do

True/False
Question
A suspended thread can then be resumed allowing it to pick up where it left off.
Correct Answer
True
Your Answer
True

True/False
Question
The Switch statement can have multiple cases without a break statements between them.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which of the following are mathematical Expressions?
Correct Answer
(+ +) , (+ =) , (- =)
Your Answer
(+ +) , (+ =) , (- =)

True/False
Question
In Interface we need not use the keyword abstract for the methods.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Syntax to declare a variable in java is :-
Correct Answer
type identifier [=value][,identifier[=value]…]
Your Answer
type identifier [=value][,identifier[=value]…]

Select The Blank
Question
The range of Byte is ________
Correct Answer
(-128 to 127)
Your Answer
(-128 to 127)

Select The Blank
Question
The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer
Garbage Collection
Your Answer
Garbage Collection

Multiple Choice Multiple Answer
Question
What are different data types in java?
Correct Answer
char , double , byte
Your Answer
char , double , byte

Select The Blank
Question
________ is the logical construct upon which the entire java language is built.
Correct Answer
Class
Your Answer
Class

Multiple Choice Multiple Answer
Question
Method definition has four parts, they are :-
Correct Answer
Name of the method , Type of object , List of parameters
Your Answer
Name of the method , List of parameters , Class

Match The Following
Question
Correct Answer
Your Answer
For statement
Initialization, condition, iteration
Initialization, condition, iteration
Multi way branch statement
Switch statement
Switch statement
To terminate the statement
Break
Break
Iteration statement
Do while
Do while

Multiple Choice Single Answer
Question
A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer
Architecture neutral
Your Answer
Architecture neutral

Select The Blank
Question
________ is referred by a variable candidate for garbage collection when the variable goes out of scope.
Correct Answer
Objects
Your Answer
Objects

Multiple Choice Multiple Answer
Question
Features of Java applets are :-
Correct Answer
They can be transmitted over internet , Require java enabled web browser
Your Answer
They can be transmitted over internet , They require web server for their operation , Require java enabled web browser

Multiple Choice Multiple Answer
Question
Packages act as containers for :-
Correct Answer
Classes , Subordinate packages
Your Answer
Classes , Subordinate packages , Subclasses

Multiple Choice Single Answer
Question
What is a string?
Correct Answer
A combination of characters called as string
Your Answer
A combination of characters called as string

Multiple Choice Single Answer
Question
Multiple Choice Single Response
Correct Answer
Object oriented programming.
Your Answer
Object oriented programming.

Select The Blank
Question
The ________ repeats a set of code at least once before the condition is tested.
Correct Answer
Do-while loop
Your Answer
Do-while loop

True/False
Question
Range of char data type in java is 0 to 65,536.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
How is it possible to use few methods of an interface in a class?
Correct Answer
By declaring the class as abstract
Your Answer
By declaring the class public

True/False
Question
Casting between primitive types allows conversion of one primitive type to another.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which of these lines of code will compile?
Correct Answer
short s = 20; , char c = 32; , double d = 1.4;
Your Answer
short s = 20; , char c = 32; , double d = 1.4;

Multiple Choice Multiple Answer
Question
What are the Logical operators?
Correct Answer
OR() , AND(&) , XOR(^)
Your Answer
OR() , AND(&) , XOR(^)

True/False
Question
When for loop start the execution, the initialization portion of the loop is executed.
Correct Answer
True
Your Answer
True

Match The Following
Question
Correct Answer
Your Answer
Class
New data type
New data type
Passing by value
Methods - pass by value
Methods - pass by value
Passing by reference
Objects – pass by reference
Objects – pass by reference
Methods and variable
Members of class
Members of class

Multiple Choice Single Answer
Question
Which statement defines a name space in which classes are stored?
Correct Answer
package
Your Answer
package

Select The Blank
Question
________can be extended.
Correct Answer
Interface
Your Answer
Interface

Multiple Choice Single Answer
Question
Java Applets are intelligent programs means :-
Correct Answer
They can react to user input and dynamically change.
Your Answer
They can be transmitted over internet.

Multiple Choice Single Answer
Question
Which of the following is used to get the value of the instance variables?
Correct Answer
Dot Notation
Your Answer
Dot Notation

Multiple Choice Multiple Answer
Question
Which statements can be used with the java's loop?
Correct Answer
Jump , Continue , Break
Your Answer
Continue , Break

Multiple Choice Multiple Answer
Question
Java Operators can be divided into these groups :-
Correct Answer
Arithmetic , Bitwise , Relational
Your Answer
Arithmetic , Bitwise , Relational

Multiple Choice Single Answer
Question
Which is the default access modifier for an interface method?
Correct Answer
public
Your Answer
public

Select The Blank
Question
Anything declared ________ can be accessed from anywhere within program.
Correct Answer
Public
Your Answer
Public

Select The Blank
Question
Java virtual machine works as ________ for the the bytecode.
Correct Answer
Interpreter
Your Answer
Interpreter
Select The Blank
Question
The ________ loop repeats a set of statements a certain number of times until a condition is matched.
Correct Answer
For
Your Answer
For

Select The Blank
Question
In ________ statement condition is true, then statement 1 is executed.
Correct Answer
If
Your Answer
If

Multiple Choice Multiple Answer
Question
What are the Logical operators?
Correct Answer
OR() , AND(&) , XOR(^)
Your Answer
OR() , AND(&) , XOR(^)

Multiple Choice Single Answer
Question
Which operator is used to create and concatenate string?
Correct Answer
Addition operator(+).
Your Answer
Addition operator(+).

Multiple Choice Single Answer
Question
If omit the package statement, which names are put into defualt pacakge?
Correct Answer
class
Your Answer
class

Multiple Choice Multiple Answer
Question
Exit statement is optional in which loops in java?
Correct Answer
While , Do-while , For
Your Answer
For

Multiple Choice Multiple Answer
Question
Classes usually consist of two things such as :-
Correct Answer
Instance variable , Methods
Your Answer
Instance variable , Methods

True/False
Question
In Interface we need not use the keyword abstract for the methods.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What modifiers may be used with top-level class?
Correct Answer
Public , Abstract , Final
Your Answer
Public , Abstract , Final

Multiple Choice Multiple Answer
Question
Which statements can be used with the java's loop?
Correct Answer
Jump , Continue , Break
Your Answer
Continue , Break

Multiple Choice Single Answer
Question
What is an array?
Correct Answer
It is value collection of same type of data type
Your Answer
It is value collection of same type of data type

True/False
Question
The switch statement does not require a break.
Correct Answer
False
Your Answer
False

True/False
Question
The for statement loop can be infinite.
Correct Answer
True
Your Answer
False

Multiple Choice Single Answer
Question
Which class can be extended?
Correct Answer
threadclass
Your Answer
threadclass

Select The Blank
Question
________ variables are declared by use of the Byte Keyword.
Correct Answer
Byte
Your Answer
Byte

Multiple Choice Multiple Answer
Question
Which are the two threads of java?
Correct Answer
mainthread( ) , childthread( )
Your Answer
current , new

Select The Blank
Question
The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer
Garbage Collection
Your Answer
Garbage Collection

Match The Following
Question
Correct Answer
Your Answer
For statement
Initialization, condition, iteration
Initialization, condition, iteration
Multi way branch statement
Switch statement
Switch statement
To terminate the statement
Break
Break
Iteration statement
Do while
Iteration

Multiple Choice Single Answer
Question
Which statement checks at the beginning of a loop to see whether the next loop iteration should occur?
Correct Answer
While
Your Answer
While

Select The Blank
Question
The Process by which one object acquires properties of another object is ________.
Correct Answer
Inheritence
Your Answer
Inheritence

Multiple Choice Single Answer
Question
Which Control Statement allow the program to execute in a non-linear fashion?
Correct Answer
Jump
Your Answer
Iteration

Multiple Choice Multiple Answer
Question
Main thread is important for which two reasons?
Correct Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions

True/False
Question
Casting between primitive types allows conversion of one primitive type to another.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Method definition has four parts, they are :-
Correct Answer
Name of the method , Type of object , List of parameters
Your Answer
Name of the method , Type of object , List of parameters

Multiple Choice Single Answer
Question
Which statement defines a name space in which classes are stored?
Correct Answer
package
Your Answer
package

True/False
Question
Variable in an interface are implicitly final and static.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
When might your program wish to run the garbage collector?
Correct Answer
When it knows there will be some idle time , Before it enters a compute-intense section of code , Before it enters a memory-intense section of code
Your Answer
Before it enters a memory-intense section of code , When it knows there will be some idle time

Multiple Choice Single Answer
Question
How to change the values of the elements of the array?
Correct Answer
By using array subscript expression
Your Answer
By specifying index number

Multiple Choice Single Answer
Question
Which of the following is used to get the value of the instance variables?
Correct Answer
Dot Notation
Your Answer
Dot Notation

True/False
Question
Integer can Cast to byte value.
Correct Answer
False
Your Answer
True

Select The Blank
Question
________ is an instance of the class.
Correct Answer
Object
Your Answer
Object

Match The Following
Question
Correct Answer
Your Answer
Subclass of the Exception
RuntimeException
Throwable
Access modifier
Public
Public
Variable in inetrface
Static type
Static type
Handle exceptions
Throws class
RuntimeException

True/False
Question
Casting occurs commonly between numeric types
Correct Answer
True
Your Answer
False

True/False
Question
If the break statement is omited in switch statement, then execution will continue on into the next case.
Correct Answer
True
Your Answer
False

Select The Blank
Question
Multiple inheritance in Java can be achieve by ________.
Correct Answer
Interface
Your Answer
Interface

Multiple Choice Single Answer
Question
Java Applets are intelligent programs means :-
Correct Answer
They can react to user input and dynamically change.
Your Answer
They can react to user input and dynamically change.

True/False
Question
Constructors can be overloaded like regular methods.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
What are members of the threads class?
Correct Answer
Method
Your Answer
Method

Multiple Choice Single Answer
Question
How do you assign values to variables?
Correct Answer
By using the assignment operator =.
Your Answer
By using the assignment operator =.

Multiple Choice Multiple Answer
Question
Java's multithreading system is built upon :-
Correct Answer
Thread class , Its methods , Companion interface
Your Answer
Thread class , Companion interface , Method

True/False
Question
As abstract class must have at least one abstract method and others may be concrete or abstract.
Correct Answer
True
Your Answer
True

Select The Blank
Question
The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer
Encapsulation
Your Answer
Encapsulation

Select The Blank
Question
After the new thread is created, it will not start running until you call its ________method.
Correct Answer
start( )
Your Answer
start( )

Select The Blank
Question
Anything declared ________ can be accessed from anywhere within program.
Correct Answer
Public
Your Answer
Private

Multiple Choice Multiple Answer
Question
Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer
Classes , Subclasses , Packages
Your Answer
Classes , Subclasses , Packages

Select The Blank
Question
Double data type uses ________ to store a value
Correct Answer
64 bits
Your Answer
32 bits

Multiple Choice Multiple Answer
Question
What are different data types in java?
Correct Answer
char , double , byte
Your Answer
double , byte
Match The Following
Question
Correct Answer
Your Answer
Constructor
Initialization object
Protected
Parameters
Method Generalized
Method Generalized
Memory deallocation
Garbage Collection
Garbage Collection
This
Current Object
Current Object

Select The Blank
Question
The ________ statement defines a name space in which classes are stored
Correct Answer
Packages
Your Answer
Packages

Multiple Choice Single Answer
Question
The argument to which specifies the delayperiod in milliseconds
Correct Answer
sleep( )
Your Answer
wait( )

Multiple Choice Multiple Answer
Question
By Providing the interface keyword, Java allows you to fully utilize the which aspect of polymorphism?
Correct Answer
One interface , Multiple methods
Your Answer
One interface , Multiple methods , Derived

Match The Following
Question
Correct Answer
Your Answer
Exit any loop
Break
Exit
If
Else
Else
Loop
While
While
Jump
Break, continue, return
Goto

True/False
Question
A thread can be preempted by a higher priority thread.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which of these lines of code will compile?
Correct Answer
short s = 20; , char c = 32; , double d = 1.4;
Your Answer
short s = 20; , char c = 32; , double d = 1.4;

Multiple Choice Single Answer
Question
How to declare an interface example?
Correct Answer
access class classname implements interface.
Your Answer
access interface name

Multiple Choice Single Answer
Question
Which statement has a the effect of "jumping out" of the switch statement?
Correct Answer
Break
Your Answer
Break

True/False
Question
There is no Global Variable in Java.
Correct Answer
True
Your Answer
False

Multiple Choice Single Answer
Question
Which method is used to determine the class of an object?
Correct Answer
getClass( ) method
Your Answer
getClass( ) method

Multiple Choice Multiple Answer
Question
Which are keywords in Java?
Correct Answer
Extends , Synchronized , Sizeof
Your Answer
Extends , Synchronized , Sizeof

True/False
Question
Each class in java can have a finalizer method.
Correct Answer
True
Your Answer
False

Select The Blank
Question
The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer
Continue
Your Answer
Continue

Multiple Choice Multiple Answer
Question
What are the programming constructs?
Correct Answer
Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop
Your Answer
Sequential , Selection -- if and switch statements , Loop

Select The Blank
Question
Java defines ________ integer type.
Correct Answer
Four
Your Answer
Five

Multiple Choice Single Answer
Question
A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer
Architecture neutral
Your Answer
Distributed

Multiple Choice Single Answer
Question
How is it possible to use few methods of an interface in a class?
Correct Answer
By declaring the class as abstract
Your Answer
By declaring the class public

Multiple Choice Multiple Answer
Question
Which of the following are mathematical Expressions?
Correct Answer
(+ +) , (+ =) , (- =)
Your Answer
(+ +) , (+ =) , (- =)

Select The Blank
Question
________method starts a threrad by calling its run method.
Correct Answer
start( )
Your Answer
start( )

Multiple Choice Single Answer
Question
Syntax to declare a variable in java is :-
Correct Answer
type identifier [=value][,identifier[=value]…]
Your Answer
type identifier [=value][,identifier[=value]…]

Multiple Choice Multiple Answer
Question
Which of the following is the declaration of an array of string objects?
Correct Answer
String[ ] s; , String [ ]s: , String[ s]:
Your Answer
String[ ] s; , String s[ ]:

True/False
Question
A thread can voluntarily relinquish control.
Correct Answer
False
Your Answer
True

Multiple Choice Single Answer
Question
Which statement is used to explicitly return from a method?
Correct Answer
Return
Your Answer
Return

Multiple Choice Multiple Answer
Question
Expression must be of the data types :-
Correct Answer
Byte , Short , Int
Your Answer
Short , Int , Boolean

Multiple Choice Single Answer
Question
What is meant by garbage collection?
Correct Answer
Object is no longer referred to by any variable
Your Answer
Object is no longer referred to by any variable

Select The Blank
Question
There are ________ kinds of Floating point type
Correct Answer
Two
Your Answer
Three

Select The Blank
Question
________ method suspends a thread for some period of time.
Correct Answer
sleep( )
Your Answer
sleep( )

True/False
Question
Running threads can be suspended, which temporarily suspends its activity.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Packages act as containers for :-
Correct Answer
Classes , Subordinate packages
Your Answer
Classes , Classes , Subclasses

Select The Blank
Question
Long makes it useful when big ________ numbers are needed.
Correct Answer
Whole
Your Answer
Prime

Select The Blank
Question
The explicit drop of an object reference by setting the value of a variable, whose data type is a reference type of ________.
Correct Answer
Null
Your Answer
Null

Multiple Choice Multiple Answer
Question
What all the run( ) method can do?
Correct Answer
Can call other method , Declare variable
Your Answer
Declare variable , Create object , Create class

True/False
Question
Java assigns to each thread a priority that determines how that thread should be treated with respect to the others.
Correct Answer
True
Your Answer
True

True/False
Question
Java compiler stores the .class files in the path specified in CLASSPATH environmental variable.
Correct Answer
False
Your Answer
False

Multiple Choice Single Answer
Question
To import a class, what is a syntax used?
Correct Answer
import classname;
Your Answer
import classname;

Multiple Choice Multiple Answer
Question
Which are the java's control statements?
Correct Answer
For , If , Switch
Your Answer
For , If , Switch

Select The Blank
Question
________ loop repeats a statement or block while its controlling expressions is true.
Correct Answer
While
Your Answer
While

Multiple Choice Single Answer
Question
Java's which system allows a thread to enter a synhcronized method on an object, and then wait there until some other thread explicitly notifies it to come out :-
Correct Answer
Messaging
Your Answer
Run time

Multiple Choice Single Answer
Question
Java was developed at :-
Correct Answer
Sun Microsystems
Your Answer
Sun Microsystems

True/False
Question
Java allows loops to be nested.
Correct Answer
True
Your Answer
True

Select The Blank
Question
Java virtual machine works as ________ for the the bytecode.
Correct Answer
Interpreter
Your Answer
Compiler

Multiple Choice Single Answer
Question
When you implement an interface method, it must be declared as :-
Correct Answer
Public
Your Answer
Public

True/False
Question
Do while loop always executes its body at least once, because its conditional expression is at the bottom of the loop.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which are the keywords use in switch statement?
Correct Answer
Case , Default
Your Answer
Case , Default , Jump

Multiple Choice Multiple Answer
Question
Which one does not extend java.lang.Number?
Correct Answer
Boolean , Character
Your Answer
Boolean , Character

Select The Blank
Question
After calling start( ) NewThread, constructor returns to ________.
Correct Answer
main( )
Your Answer
main( )
True/False
Question
Constructors can be overloaded like regular methods.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
The Bitwise Logical Operators are :-
Correct Answer
^ , ^= , << Your Answer
^ , &

Multiple Choice Multiple Answer
Question
Which of the following are mathematical Expressions?
Correct Answer
(+ +) , (+ =) , (- =)
Your Answer
(+ +)

Select The Blank
Question
In ________ statement condition is true, then statement 1 is executed.
Correct Answer
If
Your Answer
If

Select The Blank
Question
Java defines ________ integer type.
Correct Answer
Four
Your Answer
Seven

Multiple Choice Multiple Answer
Question
Which of the following is the declaration of an array of string objects?
Correct Answer
String[ ] s; , String [ ]s: , String[ s]:
Your Answer
String[ s]:

Select The Blank
Question
The ________ statement defines a name space in which classes are stored
Correct Answer
Packages
Your Answer
Packages

Multiple Choice Single Answer
Question
Multiple Choice Single Response
Correct Answer
Object oriented programming.
Your Answer
Object oriented programming.

Multiple Choice Single Answer
Question
Select the facility provided along with JVM which enhances speed of execution :-
Correct Answer
Just-In-Time (JIT) compiler.
Your Answer
Fast interpreter.

True/False
Question
Range of char data type in java is 0 to 65,536.
Correct Answer
True
Your Answer
False

Multiple Choice Single Answer
Question
What is an array?
Correct Answer
It is value collection of same type of data type
Your Answer
It is value collection of same type of data type

Match The Following
Question
Correct Answer
Your Answer
It can have only one of two possible values
Boolean type
Boolean type
Float hightemp, lowtemp
Float variable declarations
Float variable declarations
Smallest int type
Byte
Real Numbers
Floating point numbers are also known as
Real Numbers
Not real number

True/False
Question
The for statement loop can be infinite.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Expression must be of the data types :-
Correct Answer
Byte , Short , Int
Your Answer
Byte , Int , Boolean

Multiple Choice Multiple Answer
Question
Features of Java applets are :-
Correct Answer
They can be transmitted over internet , Require java enabled web browser
Your Answer
They can be transmitted over internet , They require web server for their operation , Require java enabled web browser , They are intelligent programs.

Select The Blank
Question
Java virtual machine works as ________ for the the bytecode.
Correct Answer
Interpreter
Your Answer
Compiler

Multiple Choice Single Answer
Question
Which statement is used inside the switch to terminate a statement sequence?
Correct Answer
Break
Your Answer
Break

Select The Blank
Question
The default ________ of objects protects private and transient data.
Correct Answer
Encoding
Your Answer
Casting

Multiple Choice Multiple Answer
Question
What are different data types in java?
Correct Answer
char , double , byte
Your Answer
varchar , char , double , byte

Multiple Choice Single Answer
Question
How multidimensional array is declared?
Correct Answer
int[4] [5];
Your Answer
char[4,5]

Select The Blank
Question
The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer
Garbage Collection
Your Answer
Garbage Collection

Multiple Choice Multiple Answer
Question
Which statements can be used with the java's loop?
Correct Answer
Jump , Continue , Break
Your Answer
Jump , Continue , Break

Multiple Choice Multiple Answer
Question
Java Operators can be divided into these groups :-
Correct Answer
Arithmetic , Bitwise , Relational
Your Answer
Arithmetic , Relational

Select The Blank
Question
Java defines ________ Primitive type of data.
Correct Answer
Eight
Your Answer
Eight

Select The Blank
Question
The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer
Encapsulation
Your Answer
Encapsulation

True/False
Question
Object oriented programming organizes a program around processes acting on data.
Correct Answer
False
Your Answer
True

Select The Blank
Question
________ variables are declared by use of the Byte Keyword.
Correct Answer
Byte
Your Answer
Byte

Multiple Choice Multiple Answer
Question
The Stack performs which two function?
Correct Answer
pop( ) , push( )
Your Answer
pop( ) , push( )

True/False
Question
Float data type is useful when we need fractional values.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which of the following assignments are valid?
Correct Answer
short s = 28; , double d = 2.3; , int I = '1';
Your Answer
short s = 28; , float f = 2.3; , double d = 2.3;

Select The Blank
Question
The Process by which one object acquires properties of another object is ________.
Correct Answer
Inheritence
Your Answer
Inheritence

True/False
Question
As abstract class must have at least one abstract method and others may be concrete or abstract.
Correct Answer
True
Your Answer
True

True/False
Question
Java define eight simple types of data byte, short, int, long, char, float, double, boolean.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
When java program starts up, which thread begins running immediately?
Correct Answer
Main thread
Your Answer
Main thread

Multiple Choice Single Answer
Question
A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer
Architecture neutral
Your Answer
Architecture neutral

Multiple Choice Multiple Answer
Question
What are means of encapsulating and containing the name space and scope of variables and methods?
Correct Answer
Classes , Packages , Subclasses
Your Answer
Classes , Packages , Subclasses

Multiple Choice Multiple Answer
Question
What returns a reference to the thread in which it is called?
Correct Answer
Method , Class , Object
Your Answer
Class , Object

Multiple Choice Single Answer
Question
Java was developed at :-
Correct Answer
Sun Microsystems
Your Answer
Sun Microsystems

Multiple Choice Single Answer
Question
Which statement is used to explicitly return from a method?
Correct Answer
Return
Your Answer
Return

Multiple Choice Single Answer
Question
Java Applets are intelligent programs means :-
Correct Answer
They can react to user input and dynamically change.
Your Answer
They can react to user input and dynamically change.

Select The Blank
Question
A ________ is a subclass of itself.
Correct Answer
Class
Your Answer
Class

Multiple Choice Single Answer
Question
Which statement provides an easy way to dispatch execution to different parts of your code based on the value of an expression?
Correct Answer
Switch
Your Answer
Switch

Select The Blank
Question
The ________ loop is java's most fundamental looping statement.
Correct Answer
While
Your Answer
While

Select The Blank
Question
________ method suspends a thread for some period of time.
Correct Answer
sleep( )
Your Answer
sleep( )

Multiple Choice Multiple Answer
Question
Modulus operator % can be applied to these data types :-
Correct Answer
floating Point , Integer , Character
Your Answer
floating Point , Integer , Character

Select The Blank
Question
________ statement in java is conditional branch statement.
Correct Answer
If
Your Answer
If
Multiple Choice Multiple Answer
Question
Which one does not extend java.lang.Number?
Correct Answer
Boolean , Character
Your Answer
Boolean , Character

Select The Blank
Question
The range of Byte is ________
Correct Answer
(-128 to 127)
Your Answer
(-128 to 127)

Match The Following
Question
Correct Answer
Your Answer
Subclass of the Exception
RuntimeException
RuntimeException
Access modifier
Public
Public
Variable in inetrface
Static type
Static type
Handle exceptions
Throws class
Throws class

Select The Blank
Question
The ________ statement defines a name space in which classes are stored
Correct Answer
Packages
Your Answer
Packages

True/False
Question
Suppose a given instance variable has been declared private, this instance variable is manipulated by methods outside its class.
Correct Answer
False
Your Answer
False

Select The Blank
Question
The most commonly used ________eger type is int.
Correct Answer
int
Your Answer
int

Multiple Choice Single Answer
Question
How to declare an interface example?
Correct Answer
access class classname implements interface.
Your Answer
access class classname implements interface.

Multiple Choice Multiple Answer
Question
What all the run( ) method can do?
Correct Answer
Can call other method , Declare variable
Your Answer
Can call other method , Declare variable

Select The Blank
Question
Threads define several ________.
Correct Answer
constructors
Your Answer
constructors

Multiple Choice Single Answer
Question
Which class can be extended?
Correct Answer
threadclass
Your Answer
threadclass

Multiple Choice Single Answer
Question
What is meant by garbage collection?
Correct Answer
Object is no longer referred to by any variable
Your Answer
Object is no longer referred to by any variable

Match The Following
Question
Correct Answer
Your Answer
Class
New data type
New data type
Passing by value
Methods - pass by value
Methods - pass by value
Passing by reference
Objects – pass by reference
Objects – pass by reference
Methods and variable
Members of class
Members of class

Select The Blank
Question
________ statement in java is conditional branch statement.
Correct Answer
If
Your Answer
If

True/False
Question
Java allows loops to be nested.
Correct Answer
True
Your Answer
True

Select The Blank
Question
When java program starts up, one thread begin runing and it is called ________thread.
Correct Answer
main( )
Your Answer
main( )

Select The Blank
Question
________ is an instance of the class.
Correct Answer
Object
Your Answer
Object

True/False
Question
Do while loop always executes its body at least once, because its conditional expression is at the bottom of the loop.
Correct Answer
True
Your Answer
True

Select The Blank
Question
________ is an instance of a class that implements the runnable interface.
Correct Answer
threadOb
Your Answer
threadOb

True/False
Question
A thread's priority is used to decide when to switch from one running thread to the next, this is called as the context switch.
Correct Answer
True
Your Answer
True

Select The Blank
Question
________ are stored in hierarchical manner.
Correct Answer
Packages
Your Answer
Packages

Select The Blank
Question
________ are containers for classes.
Correct Answer
Packages
Your Answer
Packages

Multiple Choice Multiple Answer
Question
Exit statement is optional in which loops in java?
Correct Answer
While , Do-while , For
Your Answer
While , Do-while , For

Multiple Choice Single Answer
Question
Select the facility provided along with JVM which enhances speed of execution :-
Correct Answer
Just-In-Time (JIT) compiler.
Your Answer
Just-In-Time (JIT) compiler.

Multiple Choice Multiple Answer
Question
Which is a public static member of thread?
Correct Answer
currenthread( ) , mainthread( )
Your Answer
currenthread( ) , mainthread( )

True/False
Question
Constructors can be overloaded like regular methods.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
A thread name can be obtained by caling which method?
Correct Answer
getName( )
Your Answer
getName( )

Multiple Choice Single Answer
Question
What are the possible access modifiers while implementing interface methods?
Correct Answer
public
Your Answer
public

Multiple Choice Multiple Answer
Question
Main thread is important for which two reasons?
Correct Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer
It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions

Multiple Choice Multiple Answer
Question
Which are keywords in Java?
Correct Answer
Extends , Synchronized , Sizeof
Your Answer
Extends , Synchronized , Sizeof

Multiple Choice Single Answer
Question
Which statement defines a name space in which classes are stored?
Correct Answer
package
Your Answer
package

Multiple Choice Multiple Answer
Question
Which of these lines of code will compile?
Correct Answer
char c = 32; , short s = 20; , double d = 1.4;
Your Answer
short s = 20; , char c = 32; , double d = 1.4;

Multiple Choice Multiple Answer
Question
By Providing the interface keyword, Java allows you to fully utilize the which aspect of polymorphism?
Correct Answer
One interface , Multiple methods
Your Answer
One interface , Multiple methods

Multiple Choice Single Answer
Question
When you implement an interface method, it must be declared as :-
Correct Answer
Public
Your Answer
Public

Multiple Choice Multiple Answer
Question
When might your program wish to run the garbage collector?
Correct Answer
Before it enters a compute-intense section of code , Before it enters a memory-intense section of code , When it knows there will be some idle time
Your Answer
Before it enters a compute-intense section of code , Before it enters a memory-intense section of code , When it knows there will be some idle time

True/False
Question
Transient variable is variable that may not be serialized.
Correct Answer
True
Your Answer
True

True/False
Question
The for statement loop can be infinite.
Correct Answer
True
Your Answer
True

True/False
Question
A constructor is automatically called when an object is instantiated.
Correct Answer
True
Your Answer
True

True/False
Question
Float data type is useful when we need fractional values.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Java Operators can be divided into these groups :-
Correct Answer
Arithmetic , Bitwise , Relational
Your Answer
Arithmetic , Bitwise , Relational

Multiple Choice Multiple Answer
Question
Java defines two ways when instantiating an object, such as :-
Correct Answer
Can implement the runnable interface , Can extend the thread class
Your Answer
Can implement the runnable interface , Can extend the thread class

Select The Blank
Question
A ________can implement more than one interface.
Correct Answer
Class
Your Answer
Class

Multiple Choice Single Answer
Question
If you do not implement all the methods of an interface while implementing, what specifier should you use for the class ?
Correct Answer
abtract
Your Answer
abtract

Multiple Choice Single Answer
Question
Which statement is used to explicitly return from a method?
Correct Answer
Return
Your Answer
Return

Multiple Choice Multiple Answer
Question
Which of the following is the declaration of an array of string objects?
Correct Answer
String[ ] s; , String [ ]s: , String[ s]:
Your Answer
String[ ] s; , String [ ]s: , String[ s]:

Multiple Choice Single Answer
Question
Which statement provides an easy way to dispatch execution to different parts of your code based on the value of an expression?
Correct Answer
Switch
Your Answer
Switch

Multiple Choice Single Answer
Question
What are the kinds of variables in Java?
Correct Answer
Instance, local, class variables
Your Answer
Instance, local, class variables

True/False
Question
Variable in an interface are implicitly final and static.
Correct Answer
True
Your Answer
True
True/False
Question
Nested if is less efficient then switch statement.
Correct Answer
True
Your Answer
True

Select The Blank
Question
________ are stored in hierarchical manner.
Correct Answer
Packages
Your Answer
Packages

Select The Blank
Question
The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer
Garbage Collection
Your Answer
Garbage Collection

Multiple Choice Single Answer
Question
When you implement an interface method, it must be declared as :-
Correct Answer
Public
Your Answer
Public

Multiple Choice Single Answer
Question
What are primitive data types?
Correct Answer
byte, short, int, long
Your Answer
byte, short, int, long

True/False
Question
In While loop condition can be any Boolean expression
Correct Answer
True
Your Answer
True

Select The Blank
Question
Long makes it useful when big ________ numbers are needed.
Correct Answer
Whole
Your Answer
Real

Multiple Choice Single Answer
Question
Which Control Statement allow the program to execute in a non-linear fashion?
Correct Answer
Jump
Your Answer
Break

True/False
Question
With java Type Casts are checked at both compile-time and runtime.
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Which of the following assignments are valid?
Correct Answer
short s = 28; , double d = 2.3; , int I = '1';
Your Answer
short s = 28; , float f = 2.3;

Multiple Choice Multiple Answer
Question
Java defines two ways when instantiating an object, such as :-
Correct Answer
Can implement the runnable interface , Can extend the thread class
Your Answer
Can implement the runnable interface , Can extend the thread class

Select The Blank
Question
The explicit drop of an object reference by setting the value of a variable, whose data type is a reference type of ________.
Correct Answer
Null
Your Answer
Instance

Multiple Choice Single Answer
Question
What is a string?
Correct Answer
A combination of characters called as string
Your Answer
A combination of characters called as string

Multiple Choice Multiple Answer
Question
What are the programming constructs?
Correct Answer
Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop
Your Answer
Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop

Multiple Choice Single Answer
Question
What can be created by instantiating an object type thread?
Correct Answer
Thread
Your Answer
Thread

Select The Blank
Question
In ________ statement the value of the expression is compared with each of the literal values in case statements.
Correct Answer
Switch
Your Answer
Switch

Multiple Choice Single Answer
Question
How to declare an interface example?
Correct Answer
access class classname implements interface.
Your Answer
access interface name

True/False
Question
Integer can Cast to byte value.
Correct Answer
False
Your Answer
False

True/False
Question
Transient variable is variable that may not be serialized.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Using which keyword we can fully abstract a class?
Correct Answer
interface
Your Answer
interface

Select The Blank
Question
The ________ loop repeats a set of statements a certain number of times until a condition is matched.
Correct Answer
For
Your Answer
For

Select The Blank
Question
There are ________ kinds of Floating point type
Correct Answer
Two
Your Answer
Two

True/False
Question
By default, all program import the java.lang package.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What returns a reference to the thread in which it is called?
Correct Answer
Method , Class , Object
Your Answer
Method

True/False
Question
Do while loop always executes its body at least once, because its conditional expression is at the bottom of the loop.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
Which statements can be used with the java's loop?
Correct Answer
Jump , Continue , Break
Your Answer
Continue , Break

Match The Following
Question
Correct Answer
Your Answer
start( )
thread
child thread
main thread
child thread
main
NewThread
this
new
sleep( )
milliseconds
milliseconds

Select The Blank
Question
________ are containers for classes.
Correct Answer
Packages
Your Answer
Packages

Multiple Choice Multiple Answer
Question
Java's multithreading system is built upon :-
Correct Answer
Thread class , Its methods , Companion interface
Your Answer
Thread class

Select The Blank
Question
The default encoding of objects supports the ________ of the classes.
Correct Answer
Evolution
Your Answer
Encoding

Multiple Choice Multiple Answer
Question
Which are the keywords use in switch statement?
Correct Answer
Case , Default
Your Answer
Case , Default

Multiple Choice Single Answer
Question
A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer
Architecture neutral
Your Answer
Distributed

True/False
Question
Boolean values can be cast into any other primitive type.
Correct Answer
False
Your Answer
False

Match The Following
Question
Correct Answer
Your Answer
It can have only one of two possible values
Boolean type
Boolean type
Float hightemp, lowtemp
Float variable declarations
Float variable declarations
Smallest int type
Byte
Byte
Floating point numbers are also known as
Real Numbers
Real Numbers

Multiple Choice Multiple Answer
Question
Which one does not extend java.lang.Number?
Correct Answer
Boolean , Character
Your Answer
Character

Select The Blank
Question
The smallest integer type is ________.
Correct Answer
Byte
Your Answer
Byte

Multiple Choice Multiple Answer
Question
Which is a public static member of thread?
Correct Answer
currenthread( ) , mainthread( )
Your Answer
mainthread( )

True/False
Question
Casting does not affect the original object or value.
Correct Answer
True
Your Answer
True

Select The Blank
Question
Anything declared ________ can be accessed from anywhere within program.
Correct Answer
Public
Your Answer
Public

Multiple Choice Single Answer
Question
Which method is used to determine the class of an object?
Correct Answer
getClass( ) method
Your Answer
getClass( ) method

Multiple Choice Multiple Answer
Question
Method definition has four parts, they are :-
Correct Answer
Name of the method , Type of object , List of parameters
Your Answer
Name of the method , List of parameters

True/False
Question
Object oriented programming organizes a program around processes acting on data.
Correct Answer
False
Your Answer
True

Multiple Choice Single Answer
Question
What are the possible access modifiers while implementing interface methods?
Correct Answer
public
Your Answer
public

Multiple Choice Single Answer
Question
Which statement defines a name space in which classes are stored?
Correct Answer
package
Your Answer
package

Multiple Choice Single Answer
Question
Which statement is used to explicitly return from a method?
Correct Answer
Return
Your Answer
Return

Multiple Choice Multiple Answer
Question
There are two distinct types of multitasking. Which are those?
Correct Answer
Process based , Thread-base
Your Answer
Process based , Thread-base

Multiple Choice Multiple Answer
Question
Exit statement is optional in which loops in java?
Correct Answer
While , Do-while , For
Your Answer
While , For
Question
Java's which system allows a thread to enter a synhcronized method on an object, and then wait there until some other thread explicitly notifies it to come out :-
Correct Answer
Messaging
Your Answer
Run time

Multiple Choice Multiple Answer
Question
Packages act as containers for :-
Correct Answer
Classes , Subordinate packages
Your Answer
Subordinate packages , Classes

True/False
Question
Threads priorities are not integers that specify the relative priority of one thread to another.
Correct Answer
False
Your Answer
False

Multiple Choice Single Answer
Question
When java program starts up, which thread begins running immediately?
Correct Answer
Main thread
Your Answer
Main thread

Multiple Choice Single Answer
Question
Java provides built-in support for which programming?
Correct Answer
Multithreaded
Your Answer
Multithreaded

Select The Blank
Question
The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer
Continue
Your Answer
Continue

Multiple Choice Single Answer
Question
When can a constructor be called without specifying arguments?
Correct Answer
When there are no constructors for the class
Your Answer
When the default constructor is not called

Match The Following
Question
Correct Answer
Your Answer
Memory deallocation
Garbage Collection
Garbage Collection
This
Current Object
Current Object
Constructor
Initialization object
Initialization object
Parameters
Method Generalized
Method Generalized

Select The Blank
Question
The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer
Encapsulation
Your Answer
Encapsulation

Select The Blank
Question
________ is an instance of a class that implements the runnable interface.
Correct Answer
threadOb
Your Answer
threadO

Multiple Choice Multiple Answer
Question
Expression must be of the data types :-
Correct Answer
Byte , Short , Int
Your Answer
Byte , Short , Int , Boolean

True/False
Question
Java define eight simple types of data byte, short, int, long, char, float, double, boolean.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What modifiers may be used with top-level class?
Correct Answer
Public , Abstract , Final
Your Answer
Public , Abstract , Final

Multiple Choice Single Answer
Question
Syntax to declare a variable in java is :-
Correct Answer
type identifier [=value][,identifier[=value]…]
Your Answer
type identifier [=value][,identifier[=value]…]

Select The Blank
Question
________ statement in java is conditional branch statement.
Correct Answer
If
Your Answer
If

Multiple Choice Single Answer
Question
Which statement used inside a set of nested loops, will only break out of the innermost loop?
Correct Answer
Break
Your Answer
Break

Select The Blank
Question
In ________ statement condition is true, then statement 1 is executed.
Correct Answer
If
Your Answer
If

Multiple Choice Multiple Answer
Question
The source for the frist package defines three classes
Correct Answer
Protection , Derived , SamePackage
Your Answer
Protection , Derived , SamePackage

True/False
Question
Java compiler stores the .class files in the path specified in CLASSPATH environmental variable.
Correct Answer
False
Your Answer
True

True/False
Question
Interface can be extended.
Correct Answer
True
Your Answer
True

Select The Blank
Question
________ is the logical construct upon which the entire java language is built.
Correct Answer
Class
Your Answer
Class

True/False
Question
Is it necessary to implement all the methods of an interface while implementing the interface
Correct Answer
False
Your Answer
True

Multiple Choice Multiple Answer
Question
Which loops can be nested in java?
Correct Answer
While , Do-while , For
Your Answer
While , Do-while , For

True/False
Question
Float data type is useful when we need fractional values.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What all the run( ) method can do?
Correct Answer
Can call other method , Declare variable
Your Answer
Can call other method , Create object

True/False
Question
Variable in an interface are implicitly final and static.
Correct Answer
True
Your Answer
True

Multiple Choice Single Answer
Question
Which of the following operators are used in conjunction with the this and super references?
Correct Answer
The dot operator
Your Answer
The dot operator

Select The Blank
Question
The ________ keyword halts the execution of the current loop and forces control out of the loop.
Correct Answer
Break
Your Answer
Break

Multiple Choice Single Answer
Question
What is a data structure that controls the state of a collection of threads as a whole?
Correct Answer
Thread group
Your Answer
Thread group

Multiple Choice Multiple Answer
Question
By Providing the interface keyword, Java allows you to fully utilize the which aspect of polymorphism?
Correct Answer
One interface , Multiple methods
Your Answer
One interface , Multiple methods , Derived

Select The Blank
Question
For externalizable objects the ________ is solely responsible for the external format of its contents.
Correct Answer
Class
Your Answer
Objects

Multiple Choice Multiple Answer
Question
Which are the java's control statements?
Correct Answer
For , If , Switch
Your Answer
For , Switch , Continue

Multiple Choice Single Answer
Question
What are the kinds of variables in Java?
Correct Answer
Instance, local, class variables
Your Answer
Instance, local, class variables

Multiple Choice Multiple Answer
Question
Java Operators can be divided into these groups :-
Correct Answer
Arithmetic , Bitwise , Relational
Your Answer
Arithmetic , Bitwise , Relational

Match The Following
Question
Correct Answer
Your Answer
Interface
Abtract method
Abtract method
Pacakge declaration
Package pkg
Package pkg
Java.applet.Applet
Class Applet
Class Applet
Java.applet
Java.applet package
Java.applet package

Multiple Choice Single Answer
Question
What is an array?
Correct Answer
It is value collection of same type of data type
Your Answer
It is value collection of same type of data type

Multiple Choice Multiple Answer
Question
Modulus operator % can be applied to these data types :-
Correct Answer
floating Point , Integer , Character
Your Answer
floating Point , Integer

Select The Blank
Question
Start( )executes a call to ________.
Correct Answer
run( )
Your Answer
run( )

Select The Blank
Question
________ is an instance of the class.
Correct Answer
Object
Your Answer
Object

Select The Blank
Question
________method starts a threrad by calling its run method.
Correct Answer
start( )
Your Answer
start( )

Multiple Choice Single Answer
Question
Which Control Statements allow the program to choose different paths of execution?
Correct Answer
Selection
Your Answer
Break

Multiple Choice Single Answer
Question
Which Control Statements enable program execution to repeat one or more statements?
Correct Answer
Iteration
Your Answer
Iteration

True/False
Question
The switch statement does not require a break.
Correct Answer
False
Your Answer
True

True/False
Question
In Interface we need not use the keyword abstract for the methods.
Correct Answer
True
Your Answer
True

Multiple Choice Multiple Answer
Question
What are the Logical operators?
Correct Answer
OR() , AND(&) , XOR(^)
Your Answer
OR() , AND(&) , XOR(^)

True/False
Question
Byte can be Cast to Double Value.
Correct Answer
True
Your Answer
False

Multiple Choice Multiple Answer
Question
Which thread is created automatically when the program is started?
Correct Answer
Main thread
Your Answer
Main thread , Current thread
Select The Blank
Question: The most commonly used ________eger type is int.
Correct Answer: int
Your Answer: int

Select The Blank
Question: The Process by which one object acquires properties of another object is ________.
Correct Answer: Inheritence
Your Answer: Inheritence

Multiple Choice Single Answer
Question: The easiest way to create a thread is to create a class that implements which interface?
Correct Answer: Runnable
Your Answer: Runnable

Multiple Choice Single Answer
Question: What are the possible access modifiers while implementing interface methods?
Correct Answer: public
Your Answer: public

Multiple Choice Single Answer
Question: Which statement is used inside the switch to terminate a statement sequence?
Correct Answer: Break
Your Answer: Break

Multiple Choice Single Answer
Question: Which statement is used to explicitly return from a method?
Correct Answer: Return
Your Answer: Return

Select The Blank
Question: ________ is probably the least used java data type
Correct Answer: short
Your Answer: short

Select The Blank
Question: Java defines ________ Primitive type of data.
Correct Answer: Eight
Your Answer: Eight

True/False
Question: The switch statement does not require a break.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: Java's which system allows a thread to enter a synhcronized method on an object, and then wait there until some other thread explicitly notifies it to come out :-
Correct Answer: Messaging
Your Answer: Run time

Select The Blank
Question: The ________ keyword halts the execution of the current loop and forces control out of the loop.
Correct Answer: Break
Your Answer: Break

True/False
Question: At any time, a thread can be terminated.
Correct Answer: True
Your Answer: True

Select The Blank
Question: Anonymous classes be implemented in an ________.
Correct Answer: Interface
Your Answer: Function

Multiple Choice Multiple Answer
Question: Features of Java applets are :-
Correct Answer: They can be transmitted over internet , Require java enabled web browser
Your Answer: They require web server for their operation , Require java enabled web browser , They are intelligent programs.

True/False
Question: When you write finalize() method for your class, you are overriding a finalizer inherited from a super class.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: To import a class, what is a syntax used?
Correct Answer: import classname;
Your Answer: import classname;

Multiple Choice Multiple Answer
Question: The Bitwise Logical Operators are :-
Correct Answer: ^ , ^= , << Your Answer: ^ , ^= , << True/False Question: Boolean values can be cast into any other primitive type.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: Which method is used to determine the class of an object?
Correct Answer: getClass( ) method
Your Answer: getClass( ) method

Multiple Choice Single Answer
Question: The argument to which specifies the delayperiod in milliseconds
Correct Answer: sleep( )
Your Answer: sleep( )

Select The Blank
Question: ________can be extended.
Correct Answer: Interface
Your Answer: Class

Multiple Choice Multiple Answer
Question: Which are the java's control statements?
Correct Answer: For , If , Switch
Your Answer: If , Switch , Continue , For

True/False
Question: There is no Global Variable in Java.
Correct Answer: True
Your Answer: True

Select The Blank
Question: After the new thread is created, it will not start running until you call its ________method.
Correct Answer: start( )
Your Answer: start( )

Match The Following
Question Correct Answer Your Answer
The Operators used in mathematical Arithmetic Operator Arithmetic Operator
Order in which operators are evaluated Order of precedence Order of precedence
Whether an expression is evaluated Associativity Associativity
left-to-right or right-to-left.
Java operator syntax for right (= operator;) (= operator;)
associativity

Multiple Choice Single Answer
Question: Which Control Statements enable program execution to repeat one or more statements?
Correct Answer: Iteration
Your Answer: Iteration

Multiple Choice Multiple Answer
Question: Which of these lines of code will compile?
Correct Answer: short s = 20; , char c = 32; , double d = 1.4;
Your Answer: short s = 20; , byte b = 128; , double d = 1.4;

Multiple Choice Multiple Answer
Question: Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer: Classes , Subclasses , Packages
Your Answer: Classes , Subclasses , Packages

Multiple Choice Single Answer
Question: Syntax to declare a variable in java is :-
Correct Answer: type identifier [=value][,identifier[=value]…]
Your Answer: type identifier [=value][,identifier[=value]…]

Multiple Choice Multiple Answer
Question: What are the programming constructs?
Correct Answer: Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop
Your Answer: Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop

Multiple Choice Multiple Answer
Question: What are means of encapsulating and containing the name space and scope of variables and methods?
Correct Answer: Classes , Packages , Subclasses
Your Answer: Classes , Packages , Subclasses

Multiple Choice Single Answer
Question: Which statement checks at the beginning of a loop to see whether the next loop iteration should occur?
Correct Answer: While
Your Answer: While

Multiple Choice Multiple Answer
Question: What are the Logical operators?
Correct Answer: OR() , AND(&) , XOR(^)
Your Answer: OR() , AND(&) , XOR(^)

Multiple Choice Multiple Answer
Question: Which of the following assignments are valid?
Correct Answer: short s = 28; , double d = 2.3; , int I = '1';
Your Answer: float f = 2.3; , double d = 2.3; , int I = '1';

Multiple Choice Multiple Answer
Question: Which one does not extend java.lang.Number?
Correct Answer: Boolean , Character
Your Answer: Boolean , Character

Select The Blank
Question: We can contruct a thread on any object that implements ________.
Correct Answer: Runnable
Your Answer: Runnable

True/False
Question: Java compiler stores the .class files in the path specified in CLASSPATH environmental variable.
Correct Answer: False
Your Answer: True

True/False
Question: User-defined package can also be imported just like the standard packages.
Correct Answer: True
Your Answer: False

Multiple Choice Multiple Answer
Question: Which of the following are mathematical Expressions?
Correct Answer: (+ +) , (+ =) , (- =)
Your Answer: (+ +) , (+ =) , (- =)

Match The Following
Question Correct Answer Your Answer
The data, or variable, defined within Instance variable. Instance variable.
General form of Cast (target--type)value (target--type)value
Determine the relationship that one Relational Operator Relational Operator
operand has to the other
The secondary versions of the Boolean Logical Operators Logical Operator
AND and OR operators Short-Circuit

True/False
Question: A thread can be preempted by a higher priority thread.
Correct Answer: True
Your Answer: True

Select The Blank
Question: Java virtual machine works as ________ for the the bytecode.
Correct Answer: Interpreter
Your Answer: Interpreter

Select The Blank
Question: The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer: Encapsulation
Your Answer: Encapsulation

True/False
Question: Object oriented programming organizes a program around processes acting on data.
Correct Answer: False
Your Answer: True

Multiple Choice Multiple Answer
Question: Which statements can be used with the java's loop?
Correct Answer: Jump , Continue , Break
Your Answer: Continue , Break , Not

True/False
Question: With java Type Casts are checked at both compile-time and runtime.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: What are the kinds of variables in Java?
Correct Answer: Instance, local, class variables
Your Answer: Instance, local, class variables
True/False
Question: Threads of equal priority must voluntarily yield control to their peers.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
The Operators used in Arithmetic Operator Arithmetic Operator
mathematical expressions
Order in which operators are Order of precedence Logical Operator
evaluated in expressions.
Whether an expression is Associativity (= operator;)
evaluated left-to-right or
right-to-left.
Java operator syntax for right (= operator;) Comparison Operator
associativity

Multiple Choice Single Answer
Question: What can be created by instantiating an object type thread?
Correct Answer: Thread
Your Answer: Method

Select The Blank
Question: ________method starts a threrad by calling its run method.
Correct Answer: start( )
Your Answer: start( )

Multiple Choice Single Answer
Question: How to declare an interface example?
Correct Answer: access class classname implements interface.
Your Answer: access interface name

Multiple Choice Single Answer
Question: Multiple Choice Single Response
Correct Answer: Object oriented programming.
Your Answer: Object oriented programming.

Select The Blank
Question: The name of the new thread is specified by ________.
Correct Answer: threadName
Your Answer: Newthread

Multiple Choice Multiple Answer
Question: Java Operators can be divided into these groups :-
Correct Answer: Arithmetic , Bitwise , Relational
Your Answer: Arithmetic , Bitwise , Relational

Multiple Choice Single Answer
Question: Which keyword is used to create an instance of a class?
Correct Answer: new
Your Answer: new method

Multiple Choice Single Answer
Question: What are the kinds of variables in Java?
Correct Answer: Instance, local, class variables
Your Answer: Integer, char, long

Multiple Choice Single Answer
Question: Java was developed at :-
Correct Answer: Sun Microsystems
Your Answer: Sun Microsystems

Select The Blank
Question: Java defines ________ Primitive type of data.
Correct Answer: Eight
Your Answer: Eight

Select The Blank
Question: There are ________ kinds of Floating point type
Correct Answer: Two
Your Answer: Two

Multiple Choice Multiple Answer
Question: Classes usually consist of two things such as :-
Correct Answer: Instance variable , Methods
Your Answer: Instance variable , Objects

Multiple Choice Multiple Answer
Question: The Bitwise Logical Operators are :-
Correct Answer: ^ , ^= , << Your Answer: & , ^

Match The Following
Question Correct Answer Your Answer
It can have only one of two Boolean type Boolean type
possible values
Float hightemp, lowtemp Float variable declarations Float variable declarations
Smallest int type Byte Byte
Floating point numbers are Real Numbers Real Numbers
also known as

Select The Blank
Question: A ________ is a subclass of itself.
Correct Answer: Class
Your Answer: Instance

Select The Blank
Question: In ________ statement the value of the expression is compared with each of the literal values in case statements.
Correct Answer: Switch
Your Answer: Switch

True/False
Question: If the break statement is omited in switch statement, then execution will continue on into the next case.
Correct Answer: True
Your Answer: True

Select The Blank
Question: The ________ loop is java's most fundamental looping statement.
Correct Answer: While
Your Answer: While

Multiple Choice Single Answer
Question: A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer: Architecture neutral
Your Answer: Distributed

Select The Blank
Question: In ________ statement condition is true, then statement 1 is executed.
Correct Answer: If
Your Answer: If

Multiple Choice Single Answer
Question: Which statement will always execute the body of a loop at least once?
Correct Answer: Do
Your Answer: Do

Multiple Choice Multiple Answer
Question: Which thread is created automatically when the program is started?
Correct Answer: Main thread
Your Answer: Main thread , Current thread , First thread

Multiple Choice Multiple Answer
Question: Which is a public static member of thread?
Correct Answer: currenthread( ) , mainthread( )
Your Answer: currenthread( ) , Staticthread( ) , runthread( )

Multiple Choice Multiple Answer
Question: The Stack performs which two function?
Correct Answer: pop( ) , push( )
Your Answer: push( ) , first

Multiple Choice Multiple Answer
Question: What returns a reference to the thread in which it is called?
Correct Answer: Method , Class , Object
Your Answer: Method , Object , Try

True/False
Question: Is it necessary to implement all the methods of an interface while implementing the interface
Correct Answer: False
Your Answer: False

Multiple Choice Multiple Answer
Question: Modulus operator % can be applied to these data types :-
Correct Answer: floating Point , Integer , Character
Your Answer: floating Point , Character , Boolean

Select The Blank
Question: The ________ loop repeats a set of statements a certain number of times until a condition is matched.
Correct Answer: For
Your Answer: If

Multiple Choice Single Answer
Question: Which statement has a the effect of "jumping out" of the switch statement?
Correct Answer: Break
Your Answer: Break

True/False
Question: By default, all program import the java.lang package.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: Which Control Statements allow the program to choose different paths of execution?
Correct Answer: Selection
Your Answer: Break

True/False
Question: A thread can voluntarily relinquish control.
Correct Answer: False
Your Answer: False

Select The Blank
Question: ________ statement in java is conditional branch statement.
Correct Answer: If
Your Answer: Switch

True/False
Question: As abstract class must have at least one abstract method and others may be concrete or abstract.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: Which statement used inside a set of nested loops, will only break out of the innermost loop?
Correct Answer: Break
Your Answer: Break

True/False
Question: When an object is referenced, it mean that it has been identified by the finalizer method for garbage collection.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: Which cast must be used to cast an object to another class?
Correct Answer: Specific cast.
Your Answer: simplific cast

True/False
Question: Byte can be Cast to Double Value.
Correct Answer: True
Your Answer: False

Multiple Choice Multiple Answer
Question: What are the programming constructs?
Correct Answer: Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop
Your Answer: Selection -- if and switch statements , Iteration -- for loop, while loop and do-while loop , Loop

Multiple Choice Single Answer
Question: When can a constructor be called without specifying arguments?
Correct Answer: When there are no constructors for the class
Your Answer: When the name of the constructor differs from that of the class

True/False
Question: Variable in an interface are implicitly final and static.
Correct Answer: True
Your Answer: True

True/False
Question: Boolean data type have only Yes or No value.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which are the two threads of java?
Correct Answer: mainthread( ) , childthread( )
Your Answer: mainthread( ) , childthread( )

Multiple Choice Multiple Answer
Question: Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer: Classes , Subclasses , Packages
Your Answer: Classes , Packages , Variables

Multiple Choice Single Answer
Question: Which method is used to determine the class of an object?
Correct Answer: getClass( ) method
Your Answer: getClass( ) method
Select The Blank
Question: The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer: Garbage Collection
Your Answer: Garbage Collection

True/False
Question: Running threads can be suspended, which temporarily suspends its activity.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: Which Control Statements enable program execution to repeat one or more statements?
Correct Answer: Iteration
Your Answer: Break

Select The Blank
Question: The ________ repeat a set of code while the condition is false.
Correct Answer: While loop
Your Answer: For

Select The Blank
Question: The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer: Continue
Your Answer: Exit

Multiple Choice Single Answer
Question: Which Control Statement allow the program to execute in a non-linear fashion?
Correct Answer: Jump
Your Answer: Selection

Multiple Choice Single Answer
Question: Which class can be extended?
Correct Answer: threadclass
Your Answer: threadclass

True/False
Question: A thread's priority is used to decide when to switch from one running thread to the next, this is called as the context switch.
Correct Answer: True
Your Answer: True

True/False
Question: Each class in java can have a finalizer method.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which of the following is the declaration of an array of string objects?
Correct Answer: String[ ] s; , String [ ]s: , String[ s]:
Your Answer: String[ s]: , String s[ ]:

Select The Blank
Question: Java virtual machine works as ________ for the the bytecode.
Correct Answer: Interpreter
Your Answer: Compiler

True/False
Question: Constructors can be overloaded like regular methods.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Methods Member of Class Member of Class
Stack First In, Last Out First In, Last Out
Class Object Oriented Programming Simple class
Object Instance of Class Instance of Class

Multiple Choice Multiple Answer
Question: Java's multithreading system is built upon :-
Correct Answer: Thread class , Its methods , Companion interface
Your Answer: Thread class , Its methods , Companion interface

Multiple Choice Multiple Answer
Question: Which one does not extend java.lang.Number?
Correct Answer: Boolean , Character
Your Answer: Boolean , Character

Select The Blank
Question: The mechanism which binds together the code and data and keeps both safe is ________.
Correct Answer: Encapsulation
Your Answer: Encapsulation

True/False
Question: There is no Global Variable in Java.
Correct Answer: True
Your Answer: False

True/False
Question: Object oriented programming organizes a program around processes acting on data.
Correct Answer: False
Your Answer: False

Multiple Choice Multiple Answer
Question: Which loops can be nested in java?
Correct Answer: While , Do-while , For
Your Answer: Do-while , For , While

True/False
Question: Threads priorities are not integers that specify the relative priority of one thread to another.
Correct Answer: False
Your Answer: True

Multiple Choice Single Answer
Question: How can class be imported from a package to a program?
Correct Answer: import java.packagename.classname
Your Answer: import java.class

True/False
Question: When for loop start the execution, the initialization portion of the loop is executed.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: To import a class, what is a syntax used?
Correct Answer: import classname;
Your Answer: import classname;

Multiple Choice Multiple Answer
Question: Which are the java's control statements?
Correct Answer: For , If , Switch
Your Answer: For , If , Continue

Select The Blank
Question: The Process by which one object acquires properties of another object is ________.
Correct Answer: Inheritence
Your Answer: Inheritence

Select The Blank
Question: A ________ is declared by use of the class keyword.
Correct Answer: class
Your Answer: class( )

Select The Blank
Question: ________ variables are declared by use of the Byte Keyword.
Correct Answer: Byte
Your Answer: Short

Multiple Choice Single Answer
Question: Select the facility provided along with JVM which enhances speed of execution :-
Correct Answer: Just-In-Time (JIT) compiler.
Your Answer: Java compiler.

Multiple Choice Multiple Answer
Question: Method definition has four parts, they are :-
Correct Answer: Name of the method , Type of object , List of parameters
Your Answer: Name of the method , Type of object , Class

Multiple Choice Single Answer
Question: How many concrete classes can you have inside an interface?
Correct Answer: none
Your Answer: two

Multiple Choice Single Answer
Question: Which statement checks at the beginning of a loop to see whether the next loop iteration should occur?
Correct Answer: While
Your Answer: Do-while

Multiple Choice Single Answer
Question: How to change the values of the elements of the array?
Correct Answer: By using array subscript expression
Your Answer: By using array subscript expression

Multiple Choice Multiple Answer
Question: What are means of encapsulating and containing the name space and scope of variables and methods?
Correct Answer: Classes , Packages , Subclasses
Your Answer: Classes , Packages , Subclasses

Match The Following
Question Correct Answer Your Answer
Exit any loop Break Exit
If Else Else
Loop While While
Jump Break, continue, return Break, continue, return

True/False
Question: Casting between primitive types allows conversion of one primitive type to another.
Correct Answer: True
Your Answer: True

Select The Blank
Question: The smallest integer type is ________.
Correct Answer: Byte
Your Answer: Byte

Multiple Choice Single Answer
Question: class conditional { public static void main(String args[]) { int i = 20; int j = 55; int z = 0; z = i < j ? i : j; // ternary operator System.out.println("The value assigned is " + z); } } } What is output of the above program? Correct Answer: The value assigned is 20
Your Answer: The value assigned is 20

Select The Blank
Question: Multiple inheritance in Java can be achieve by ________.
Correct Answer: Interface
Your Answer: Object

Multiple Choice Multiple Answer
Question: Exit statement is optional in which loops in java?
Correct Answer: While , Do-while , For
Your Answer: Do-while

Select The Blank
Question: The range of Byte is ________
Correct Answer: (-128 to 127)
Your Answer: (-128 to 127)

True/False
Question: In While loop condition can be any Boolean expression
Correct Answer: True
Your Answer: False

Select The Blank
Question: When java program starts up, one thread begin runing and it is called ________thread.
Correct Answer: main( )
Your Answer: main( )

Select The Blank
Question: The ________ statement defines a name space in which classes are stored
Correct Answer: Packages
Your Answer: New

Multiple Choice Multiple Answer
Question: Packages act as containers for :-
Correct Answer: Classes , Subordinate packages
Your Answer: Classes , Classes , Subclasses

Multiple Choice Single Answer
Question: How array is defined?
Correct Answer: int arr[];
Your Answer: int arr[];

Multiple Choice Multiple Answer
Question: What modifiers may be used with top-level class?
Correct Answer: Public , Abstract , Final
Your Answer: Public , Abstract , Final

Multiple Choice Multiple Answer
Question: Which statements can be used with the java's loop?
Correct Answer: Jump , Continue , Break
Your Answer: Jump , Continue , Break
Question: Java defines two ways when instantiating an object, such as :-
Correct Answer: Can implement the runnable interface , Can extend
the thread class
Your Answer: Can implement the runnable interface , Can extend the
thread class , New class

True/False
Question: Java allows loops to be nested.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: If omit the package statement, which names are put into
defualt pacakge?
Correct Answer: class
Your Answer: method

True/False
Question: The switch statement does not require a break.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: What is a data structure that controls the state of a
collection of threads as a whole?
Correct Answer: Thread group
Your Answer: Exceptions

Multiple Choice Multiple Answer
Question: Main thread is important for which two reasons?
Correct Answer: It is thread from which other "child" thread will be
swapped , Often it must be the last thread to finish execution because
It performs various shutdown actions
Your Answer: It is thread from which other "child" thread will be
swapped , It is current thread

Select The Blank
Question: For externalizable objects the ________ is solely
responsible for the external format of its contents.
Correct Answer: Class
Your Answer: Method

Multiple Choice Multiple Answer
Question: Which are keywords in Java?
Correct Answer: Extends , Synchronized , Sizeof
Your Answer: Extends , Synchronized

True/False
Question: Transient variable is variable that may not be serialized.
Correct Answer: True
Your Answer: False

True/False
Question: A thread can be blocked when waiting for a resource.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: What are different modifiers?
Correct Answer: Private , Protected , Final
Your Answer: Private , Protected

Select The Blank
Question: The explicit drop of an object reference by setting the
value of a variable, whose data type is a reference type of ________.
Correct Answer: Null
Your Answer: Null

Match The Following
Question Correct Answer Your Answer
The data, or variable, defined Instance variable. Instance variable.
within a class
General form of Cast (target--type)value (target--type)value
Determine the relationship that Relational Operator Relational Operator
The secondary versions of the Short-Circuit Logical Operators Logical Operator
Boolean AND and OR operators

True/False
Question: With java Type Casts are checked at both compile-time and
runtime.
Correct Answer: True
Your Answer: False

Multiple Choice Single Answer
Question: Which statement provides an easy way to dispatch execution
to different parts of your code based on the value of an expression?
Correct Answer: Switch
Your Answer: Switch

Multiple Choice Multiple Answer
Question: What all the run( ) method can do?
Correct Answer: Can call other method , Declare variable
Your Answer: Can call other method , Declare variable , Create
object

Multiple Choice Single Answer
Question: How many types of literals are there?
Correct Answer: Number literals, character literals, boolean
literals, string literals, etc.
Your Answer: Only boolean and string literals

Multiple Choice Single Answer
Question: What is an array?
Correct Answer: It is value collection of same type of data type
Your Answer: It is value collection of same type of data type

Multiple Choice Multiple Answer
Question: Which of these lines of code will compile?
Correct Answer: short s = 20; , char c = 32; , double d = 1.4;
Your Answer: byte b = 128; , char c = 32;

Multiple Choice Single Answer
Question: How do you assign values to variables?
Correct Answer: By using the assignment operator =.
Your Answer: By using the assignment operator =.

Select The Blank
Question: ________ is the logical construct upon which the entire
java language is built.
Correct Answer: Class
Your Answer: Method

Multiple Choice Single Answer
Question: How multidimensional array is declared?
Correct Answer: int[4] [5];
Your Answer: int[4] [5];

True/False
Question: The for statement loop can be infinite.
Correct Answer: True
Your Answer: True

Select The Blank
Question: ________ are stored in hierarchical manner.
Correct Answer: Packages
Your Answer: Packages

Multiple Choice Multiple Answer
Question: When might your program wish to run the garbage collector?
Correct Answer: Before it enters a compute-intense section of code ,
Before it enters a memory-intense section of code , When it knows there
will be some idle time
Your Answer: Before it enters a memory-intense section of code ,
When it knows there will be some idle time , Before objects are finalized

Multiple Choice Multiple Answer
Question: Which of the following are mathematical Expressions?
Correct Answer: (+ +) , (+ =) , (- =)
Your Answer: (+ +) , (- +)

Multiple Choice Single Answer
Question: What is a string?
Correct Answer: A combination of characters called as string
Your Answer: A combination of characters called as string

Multiple Choice Single Answer
Question: What is meant by garbage collection?
Correct Answer: Object is no longer referred to by any variable
Your Answer: Object is no longer referred to by any variable

True/False
Question: Casting occurs commonly between numeric types
Correct Answer: True
Your Answer: False

Select The Blank
Question: ________ is an instance of a class that implements the
runnable interface.
Correct Answer: threadOb
Your Answer: threadA

True/False
Question: Integer can Cast to byte value.
Correct Answer: False
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Derived class Subclass of protection Superclass
Class Interface Directories
Packages Directories Excpetion
Specifier Protected Protected

True/False
Question: A thread can be preempted by a higher priority thread.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: By Providing the interface keyword, Java allows you to
fully utilize the which aspect of polymorphism?
Correct Answer: One interface , Multiple methods
Your Answer: One interface , Multiple methods , Derived

Select The Blank
Question: Anonymous classes be implemented in an ________.
Correct Answer: Interface
Your Answer: Interface

True/False
Question: Interface can be extended.
Correct Answer: True
Your Answer: False

Multiple Choice Multiple Answer
Question: There are two distinct types of multitasking. Which are
those?
Correct Answer: Process based , Thread-base
Your Answer: Process based , Thread-base

Multiple Choice Single Answer
Question: Java provides built-in support for which programming?
Correct Answer: Multithreaded
Your Answer: Multithreaded

Multiple Choice Single Answer
Question: The argument to which specifies the delayperiod in
milliseconds
Correct Answer: sleep( )
Your Answer: sleep( )

True/False
Question: The switch differs from the if in that switch can only
test for equality, whereas if can evaluate any type of Boolean expression.
Correct Answer: True
Your Answer: True

Select The Blank
Question: ________ is referred by a variable candidate for garbage
collection when the variable goes out of scope.
Correct Answer: Objects
Your Answer: Class
Select The Blank
Question: After calling start( ) NewThread, constructor returns to
________.
Correct Answer: main( )
Your Answer: main( )

True/False
Question: Nested if is less efficient then switch statement.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Constructor Initialization object Initialization object
Parameters Method Generalized Method Generalized
Memory deallocation Garbage Collection Garbage Collection
This Current Object Current Object

Multiple Choice Multiple Answer
Question: Which thread is created automatically when the program is
started?
Correct Answer: Main thread
Your Answer: Main thread , Current thread

Select The Blank
Question: When java program starts up, one thread begin runing and
it is called ________thread.
Correct Answer: main( )
Your Answer: main( )

Multiple Choice Single Answer
Question: Multiple Choice Single Response
Correct Answer: Object oriented programming.
Your Answer: Systems Programming.

Multiple Choice Single Answer
Question: Which statement will always execute the body of a loop at
least once?
Correct Answer: Do
Your Answer: Do

True/False
Question: In While loop condition can be any Boolean expression
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: By Providing the interface keyword, Java allows you to
fully utilize the which aspect of polymorphism?
Correct Answer: One interface , Multiple methods
Your Answer: One interface , Multiple methods

True/False
Question: Short data type range is -30,376 to 32768.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: Which is a public static member of thread?
Correct Answer: Currenthread( )
Your Answer: Currenthread( )

Multiple Choice Multiple Answer
Question: Which of the following is the declaration of an array of
string objects?
Correct Answer: String[ ] s; , String [ ]s: , String[ s]:
Your Answer: String[ s]: , String s[ ]:

Multiple Choice Multiple Answer
Question: There are two distinct types of multitasking. Which are
those?
Correct Answer: Process based , Thread-base
Your Answer: Process based , Thread-base

Select The Blank
Question: ________ is probably the least used java data type
Correct Answer: short
Your Answer: short

True/False
Question: Casting between primitive types allows conversion of one
primitive type to another.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: What are different modifiers?
Correct Answer: Private , Protected , Final
Your Answer: Private , Protected , Final

Multiple Choice Single Answer
Question: A Java application can execute anywhere on the network,
this implements that Java is :-
Correct Answer: Architecture neutral
Your Answer: Architecture neutral

Multiple Choice Single Answer
Question: Java Applets are intelligent programs means :-
Correct Answer: They can react to user input and dynamically change.
Your Answer: They have additional intelligence.

Select The Blank
Question: The name of the new thread is specified by ________.
Correct Answer: threadName
Your Answer: Newthread

Select The Blank
Question: ________ is referred by a variable candidate for garbage
collection when the variable goes out of scope.
Correct Answer: Objects
Your Answer: Objects

Select The Blank
Question: The ________ repeat a set of code while the condition is
false.
Correct Answer: While loop
Your Answer: For

Multiple Choice Single Answer
Question: Select the facility provided along with JVM which enhances
speed of execution :-
Correct Answer: Just-In-Time (JIT) compiler.
Your Answer: Just-In-Time (JIT) compiler.

Select The Blank
Question: ________ is an instance of the class.
Correct Answer: Object
Your Answer: Object

Multiple Choice Single Answer
Question: What is a data structure that controls the state of a
collection of threads as a whole?
Correct Answer: Thread group
Your Answer: Thread group

Multiple Choice Single Answer
Question: Which statement used inside a set of nested loops, will
only break out of the innermost loop?
Correct Answer: Break
Your Answer: Break

Multiple Choice Multiple Answer
Question: Which are the keywords use in switch statement?
Correct Answer: Case , Default
Your Answer: Case , Default

Multiple Choice Single Answer
Question: The argument to which specifies the delayperiod in
milliseconds
Correct Answer: sleep( )
Your Answer: sleep( )

Multiple Choice Multiple Answer
Question: Which loops can be nested in java?
Correct Answer: While , Do-while , For
Your Answer: While , Do-while , For

True/False
Question: If the break statement is omited in switch statement, then
execution will continue on into the next case.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Exit any loop Break Exit
If Else Else
Loop While While
Jump Break, continue, return Break, continue, return

Multiple Choice Single Answer
Question: To import a class, what is a syntax used?
Correct Answer: import classname;
Your Answer: import classname;

Select The Blank
Question: The ________ keyword halts the execution of the current
loop and forces control out of the loop.
Correct Answer: Break
Your Answer: Break

Multiple Choice Multiple Answer
Question: Java's multithreading system is built upon :-
Correct Answer: Thread class , Its methods , Companion interface
Your Answer: Thread class , Its methods , Companion interface

True/False
Question: When an object is referenced, it mean that it has been
identified by the finalizer method for garbage collection.
Correct Answer: False
Your Answer: True

Multiple Choice Single Answer
Question: Which Control Statements allow the program to choose
different paths of execution?
Correct Answer: Selection
Your Answer: Selection

Multiple Choice Multiple Answer
Question: Method definition has four parts, they are :-
Correct Answer: Name of the method , Type of object , List of
parameters
Your Answer: Name of the method , List of parameters

Select The Blank
Question: There are ________ kinds of Floating point type
Correct Answer: Two
Your Answer: Two

Multiple Choice Multiple Answer
Question: What returns a reference to the thread in which it is
called?
Correct Answer: Method , Class , Object
Your Answer: Method , Class , Object

Multiple Choice Single Answer
Question: Which statement defines a name space in which classes are
stored?
Correct Answer: package
Your Answer: objects

Select The Blank
Question: ________ is an instance of a class that implements the
runnable interface.
Correct Answer: threadOb
Your Answer: threadOb

Multiple Choice Multiple Answer
Question: The Stack performs which two function?
Correct Answer: pop( ) , push( )
Your Answer: pop( ) , push( )

True/False
Question: The for statement loop can be infinite.
Correct Answer: True
Your Answer: True

True/False
Question: A thread's priority is used to decide when to switch from
one running thread to the next, this is called as the context switch.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which one does not extend java.lang.Number?
Correct Answer: Boolean , Character
Your Answer: Integer , Boolean , Character

Multiple Choice Single Answer
Question: If you do not implement all the methods of an interface
while implementing, what specifier should you use for the class ?
Correct Answer: abtract
Your Answer: abtract

True/False
Question: Running threads can be suspended, which temporarily
suspends its activity.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: What are the possible access modifiers while implementing
interface methods?
Correct Answer: public
Your Answer: public
Multiple Choice Multiple Answer
Question: When might your program wish to run the garbage collector?
Correct Answer: When it knows there will be some idle time , Before it enters a compute-intense section of code , Before it enters a memory-intense section of code
Your Answer: Before it enters a memory-intense section of code , When it knows there will be some idle time , Before objects are finalized

Match The Following
Question Correct Answer Your Answer
start( ) thread main
main thread child thread child thread
NewThread this new
sleep( ) milliseconds milliseconds


Multiple Choice Multiple Answer
Question: Expression must be of the data types :-
Correct Answer: Byte , Short , Int
Your Answer: Byte , Int , Boolean

Multiple Choice Single Answer
Question: What are members of the threads class?
Correct Answer: Method
Your Answer: Method

Multiple Choice Multiple Answer
Question: What modifiers may be used with top-level class?
Correct Answer: Public , Abstract , Final
Your Answer: Public , Abstract , Final

Select The Blank
Question: Start( )executes a call to ________.
Correct Answer: run( )
Your Answer: run( )

Multiple Choice Single Answer
Question: What is a data structure that controls the state of a collection of threads as a whole?
Correct Answer: Thread group
Your Answer: Thread group

Match The Following
Question Correct Answer Your Answer
currentThread member of thread member of thread
High priority thread preemptive multitasking thread's priority
getName thread's name thread's name
isAlive thread is still running thread is still running

Multiple Choice Single Answer
Question: How do you assign values to variables?
Correct Answer: By using the assignment operator =.
Your Answer: By using the assignment operator =.

Multiple Choice Single Answer
Question: Which of the following is used to get the value of the instance variables?
Correct Answer: Dot Notation
Your Answer: Semi colon

Multiple Choice Multiple Answer
Question: Which are the keywords use in switch statement?
Correct Answer: Case , Default
Your Answer: Case , Default

Multiple Choice Multiple Answer
Question: The source for the frist package defines three classes
Correct Answer: Protection , Derived , SamePackage
Your Answer: Method , Derived , SamePackage

Multiple Choice Multiple Answer
Question: The Stack performs which two function?
Correct Answer: pop( ) , push( )
Your Answer: pop( ) , push( )

Select The Blank
Question: ________ variables are declared by use of the Byte Keyword.
Correct Answer: Byte
Your Answer: Byte

Select The Blank
Question: The ________ repeats a set of code at least once before the condition is tested.
Correct Answer: Do-while loop
Your Answer: Do-while loop

Multiple Choice Single Answer
Question: What is a string?
Correct Answer: A combination of characters called as string
Your Answer: A combination of characters called as string

Multiple Choice Single Answer
Question: How multidimensional array is declared?
Correct Answer: int[4] [5];
Your Answer: int[4] [5];

Multiple Choice Single Answer
Question: A thread name can be obtained by caling which method?
Correct Answer: getName( )
Your Answer: getName( )

True/False
Question: A thread can voluntarily relinquish control.
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: Which cast must be used to convert a larger value into a smaller one?
Correct Answer: Explicit cast.
Your Answer: simplific cast

Multiple Choice Multiple Answer
Question: Modulus operator % can be applied to these data types :-
Correct Answer: floating Point , Integer , Character
Your Answer: floating Point , Integer , Character

True/False
Question: Suppose a given instance variable has been declared private, this instance variable is manipulated by methods outside its class.
Correct Answer: False
Your Answer: False

True/False
Question: Integer can Cast to byte value.
Correct Answer: False
Your Answer: True

Multiple Choice Single Answer
Question: How many concrete classes can you have inside an interface?
Correct Answer: none
Your Answer: three

Multiple Choice Single Answer
Question: When java program starts up, which thread begins running immediately?
Correct Answer: Main thread
Your Answer: Main thread

Multiple Choice Single Answer
Question: Which operator is used to create and concatenate string?
Correct Answer: Addition operator(+).
Your Answer: Addition operator(+).

Select The Blank
Question: After calling start( ) NewThread, constructor returns to ________.
Correct Answer: main( )
Your Answer: main( )

Multiple Choice Single Answer
Question: How to change the values of the elements of the array?
Correct Answer: By using array subscript expression
Your Answer: By specifying index number

Multiple Choice Single Answer
Question: How can class be imported from a package to a program?
Correct Answer: import java.packagename.classname
Your Answer: import java.packagename.classname

True/False
Question: Is it necessary to implement all the methods of an interface while implementing the interface
Correct Answer: False
Your Answer: False

Multiple Choice Single Answer
Question: A Java application can execute anywhere on the network, this implements that Java is :-
Correct Answer: Architecture neutral
Your Answer: Architecture neutral

True/False
Question: Interface can be extended.
Correct Answer: True
Your Answer: True

Select The Blank
Question: A class can only inherit a single ________.
Correct Answer: Superclass
Your Answer: Superclass

Multiple Choice Multiple Answer
Question: Exit statement is optional in which loops in java?
Correct Answer: While , Do-while , For
Your Answer: While , Do-while , For

True/False
Question: Java allows loops to be nested.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: What is an array?
Correct Answer: It is value collection of same type of data type
Your Answer: It is value collection of same type of data type

Select The Blank
Question: ________ loop repeats a statement or block while its controlling expressions is true.
Correct Answer: While
Your Answer: Do-while

True/False
Question: A thread can be blocked when waiting for a resource.
Correct Answer: True
Your Answer: True

Select The Blank
Question: A ________ is declared by use of the class keyword.
Correct Answer: class
Your Answer: class( )

Select The Blank
Question: Double data type uses ________ to store a value
Correct Answer: 64 bits
Your Answer: 64 bits

Multiple Choice Multiple Answer
Question: Packages act as containers for :-
Correct Answer: Classes , Subordinate packages
Your Answer: Classes , Subordinate packages , Subclasses

Select The Blank
Question: The mechanism by which java frees the memory occupied by unused objects is ________.
Correct Answer: Garbage Collection
Your Answer: Garbage Collection

Select The Blank
Question: The explicit drop of an object reference by setting the value of a variable, whose data type is a reference type of ________.
Correct Answer: Null
Your Answer: Instance

Multiple Choice Single Answer
Question: How many types of literals are there?
Correct Answer: Number literals, character literals, boolean literals, string literals, etc.
Your Answer: Number literals, character literals, boolean literals, string literals, etc.

Multiple Choice Single Answer
Question: How array is defined?
Correct Answer: int arr[];
Your Answer: int arr[];

Multiple Choice Single Answer
Question: What are primitive data types?
Correct Answer: byte, short, int, long
Your Answer: byte, short, int, long

Multiple Choice Multiple Answer
Question: Which of the following is the declaration of an array of string objects?
Correct Answer: String[ ] s; , String [ ]s: , String[ s]: Your Answer: String[ ] s; , String [ ]s: , String[ s]:
True/False
Question: Casting occurs commonly between numeric types
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: When might your program wish to run the garbage collector?
Correct Answer: Before it enters a compute-intense section of code , Before it enters a memory-intense section of code , When it knows there will be some idle time
Your Answer: When it knows there will be some idle time , Before it enters a memory-intense section of code

Multiple Choice Single Answer
Question: What are members of the threads class?
Correct Answer: Method
Your Answer: Method

True/False
Question: Boolean data type have only Yes or No value.
Correct Answer: True
Your Answer: False

Select The Blank
Question: The ________ loop is java's most fundamental looping statement.
Correct Answer: While
Your Answer: While

Multiple Choice Single Answer
Question: In multithreaded program each part of such program is called :-
Correct Answer: Thread
Your Answer: Thread

Multiple Choice Multiple Answer
Question: Which of the following are mathematical Expressions?
Correct Answer: (+ +) , (+ =) , (- =)
Your Answer: (+ =) , (- =)

True/False
Question: A thread can be blocked when waiting for a resource.
Correct Answer: True
Your Answer: True

True/False
Question: Each class in java can have a finalizer method.
Correct Answer: True
Your Answer: False

Multiple Choice Single Answer
Question: Which statement has a the effect of "jumping out" of the switch statement?
Correct Answer: Break
Your Answer: Break

True/False
Question: As abstract class must have at least one abstract method and others may be concrete or abstract.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: The argument to which specifies the delayperiod in milliseconds
Correct Answer: sleep( )
Your Answer: sleep( )

Select The Blank
Question: When java program starts up, one thread begin runing and it is called ________thread.
Correct Answer: main( )
Your Answer: main( )

Multiple Choice Single Answer
Question: class conditional { public static void main(String args[]) { int i = 20; int j = 55; int z = 0; z = i < j ? i : j; // ternary operator System.out.println("The value assigned is " + z); } } } What is output of the above program? Correct Answer: The value assigned is 20
Your Answer: The value assigned is 20

True/False
Question: When for loop start the execution, the initialization portion of the loop is executed.
Correct Answer: True
Your Answer: True

Select The Blank
Question: ________ variables are declared by use of the Byte Keyword.
Correct Answer: Byte
Your Answer: Byte

Multiple Choice Single Answer
Question: Which cast must be used to cast an object to another class?
Correct Answer: Specific cast.
Your Answer: Explicit cast.

Multiple Choice Multiple Answer
Question: Which are keywords in Java?
Correct Answer: Extends , Synchronized , Sizeof
Your Answer: Extends , Synchronized , Sizeof

Multiple Choice Multiple Answer
Question: What are different data types in java?
Correct Answer: char , double , byte
Your Answer: char , double , byte

Match The Following
Question Correct Answer Your Answer
The Operators used in mathematical Arithmetic Operator (= operator;)
expressions
Order in which operators are evaluated in Order of precedence Order of precedence
expressions.
Whether an expression is evaluated Associativity Associativity
left-to-right or right-to-left.
Java operator syntax for right associativity (= operator;) Comparison Operator

Multiple Choice Single Answer
Question: Java uses which system to store packages?
Correct Answer: File system directories
Your Answer: File system directories

True/False
Question: Constructors can be overloaded like regular methods.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: What are different modifiers?
Correct Answer: Private , Protected , Final
Your Answer: Private , Protected

Select The Blank
Question: After the new thread is created, it will not start running until you call its ________method.
Correct Answer: start( )
Your Answer: start( )

Select The Blank
Question: The ________ repeats a set of code at least once before the condition is tested.
Correct Answer: Do-while loop
Your Answer: Do-while loop

Select The Blank
Question: ________ loop repeats a statement or block while its controlling expressions is true.
Correct Answer: While
Your Answer: While

Match The Following
Question Correct Answer Your Answer
The data, or variable, defined within a class Instance variable. Instance variable.
General form of Cast (target--type)value (target--type)value
Determine the relationship that one operand Relational Operator Comparison operator
has to the other
The secondary versions of the Boolean AND Short-Circuit Logical Short-Circuit Logical and OR operators Operators Operators

Multiple Choice Multiple Answer
Question: The Bitwise Logical Operators are :-
Correct Answer: ^ , ^= , << Your Answer: ^ , << Select The Blank Question: The name of the new thread is specified by ________.
Correct Answer: threadName
Your Answer: Currentthread

Select The Blank
Question: ________ is probably the least used java data type
Correct Answer: short
Your Answer: short

Multiple Choice Single Answer
Question: How to change the values of the elements of the array?
Correct Answer: By using array subscript expression
Your Answer: By specifying index number

Multiple Choice Single Answer
Question: What is declared within the file that will belong to the specified pacakage?
Correct Answer: classes
Your Answer: classes

Multiple Choice Single Answer
Question: How many concrete classes can you have inside an interface?
Correct Answer: none
Your Answer: none

True/False
Question: A thread's priority is used to decide when to switch from one running thread to the next, this is called as the context switch.
Correct Answer: True
Your Answer: True

Select The Blank
Question: A class is ________ for an objects in java.
Correct Answer: Template
Your Answer: Template

Select The Blank
Question: Anonymous classes be implemented in an ________.
Correct Answer: Interface
Your Answer: Method

True/False
Question: When an object is referenced, it mean that it has been identified by the finalizer method for garbage collection.
Correct Answer: False
Your Answer: False

Multiple Choice Multiple Answer
Question: Features of Java applets are :-
Correct Answer: They can be transmitted over internet , Require java enabled web browser
Your Answer: They can be transmitted over internet , Require java enabled web browser , They are intelligent programs.

Multiple Choice Multiple Answer
Question: Classes usually consist of two things such as :-
Correct Answer: Instance variable , Methods
Your Answer: Instance variable , Methods

Multiple Choice Multiple Answer
Question: Main thread is important for which two reasons?
Correct Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions

True/False
Question: If the break statement is omited in switch statement, then execution will continue on into the next case.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which are the two threads of java?
Correct Answer: mainthread( ) , childthread( )
Your Answer: mainthread( ) , current

Select The Blank
Question: The ________ repeat a set of code while the condition is false.
Correct Answer: While loop
Your Answer: For

Multiple Choice Multiple Answer
Question: Which of these lines of code will compile?
Correct Answer: short s = 20; , char c = 32; , double d = 1.4;
Your Answer: short s = 20; , byte b = 128;

Multiple Choice Multiple Answer
Question: What are means of encapsulating and containing the name space and scope of variables and methods?
Correct Answer: Classes , Packages , Subclasses
Your Answer: Packages , Subclasses

Multiple Choice Single Answer
Question: How is it possible to use few methods of an interface in a class?
Correct Answer: By declaring the class as abstract
Your Answer: By declaring the class as abstract

Multiple Choice Single Answer
Question: Which statement will always execute the body of a loop at least once?
Correct Answer: Do
Your Answer: Do
True/False
Question: Object oriented programming organizes a program around processes acting on data.
Correct Answer: False
Your Answer: True

Select The Blank
Question: ________ are stored in hierarchical manner.
Correct Answer: Packages
Your Answer: Objects

Multiple Choice Single Answer
Question: Which statement has a the effect of "jumping out" of the switch statement?
Correct Answer: Break
Your Answer: Break

Multiple Choice Multiple Answer
Question: Which are the java's control statements?
Correct Answer: For , If , Switch
Your Answer: For , If , Switch

Multiple Choice Single Answer
Question: Which statement defines a name space in which classes are stored?
Correct Answer: package
Your Answer: class

Select The Blank
Question: Threads define several ________.
Correct Answer: constructors
Your Answer: constructors

Multiple Choice Multiple Answer
Question: What are different data types in java?
Correct Answer: char , double , byte
Your Answer: char , double , byte

True/False
Question: There is no Global Variable in Java.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Object Instance of Class Member of Class
Methods Member of Class Instance of Class
Stack First In, Last Out First In, Last Out
Class Object Oriented Programming Object Oriented Programming

True/False
Question: Boolean values can be cast into any other primitive type.
Correct Answer: False
Your Answer: False

True/False
Question: Short data type range is -30,376 to 32768.
Correct Answer: False
Your Answer: True

Multiple Choice Single Answer
Question: How array is defined?
Correct Answer: int arr[];
Your Answer: int arr[];

Select The Blank
Question: In ________ statement condition is true, then statement 1 is executed.
Correct Answer: If
Your Answer: If

Multiple Choice Multiple Answer
Question: Features of Java applets are :-
Correct Answer: They can be transmitted over internet , Require java enabled web browser
Your Answer: They can be transmitted over internet , They require web server for their operation , Require java enabled web browser

True/False
Question: Boolean data type have only Yes or No value.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: class conditional { public static void main(String args[]) { int i = 20; int j = 55; int z = 0; z = i < j ? i : j; // ternary operator System.out.println("The value assigned is " + z); } } } What is output of the above program? Correct Answer: The value assigned is 20
Your Answer: The value assigned is 20

Multiple Choice Multiple Answer
Question: Classes usually consist of two things such as :-
Correct Answer: Instance variable , Methods
Your Answer: Objects , Methods

Select The Blank
Question: The most commonly used ________eger type is int.
Correct Answer: int
Your Answer: int

Select The Blank
Question: The range of Byte is ________
Correct Answer: (-128 to 127)
Your Answer: (-128 to 127)

True/False
Question: User-defined package can also be imported just like the standard packages.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Java defines two ways when instantiating an object, such as :-
Correct Answer: Can implement the runnable interface , Can extend the thread class
Your Answer: Can extend the thread class , Class object

Multiple Choice Single Answer
Question: Which method is used to determine the class of an object?
Correct Answer: getClass( ) method
Your Answer: getClass( ) method

Multiple Choice Single Answer
Question: If you do not implement all the methods of an interface while implementing, what specifier should you use for the class ?
Correct Answer: abtract
Your Answer: abtract

Multiple Choice Multiple Answer
Question: Main thread is important for which two reasons?
Correct Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions , It is main thread

Select The Blank
Question: The ________ repeat a set of code while the condition is false.
Correct Answer: While loop
Your Answer: While loop

Select The Blank
Question: A class can only inherit a single ________.
Correct Answer: Superclass
Your Answer: Superclass

Multiple Choice Multiple Answer
Question: Which of these lines of code will compile?
Correct Answer: short s = 20; , char c = 32; , double d = 1.4;
Your Answer: byte b = 128; , char c = 32;

Multiple Choice Multiple Answer
Question: Packages act as containers for :-
Correct Answer: Classes , Subordinate packages
Your Answer: Classes , Subordinate packages , Subclasses

Multiple Choice Single Answer
Question: Syntax to declare a variable in java is :-
Correct Answer: type identifier [=value][,identifier[=value]…]
Your Answer: type identifier [=value][,identifier[=value]…]

Multiple Choice Single Answer
Question: How can class be imported from a package to a program?
Correct Answer: import java.packagename.classname
Your Answer: import java.packagename.classname

True/False
Question: Do while loop always executes its body at least once, because its conditional _expression is at the bottom of the loop.
Correct Answer: True
Your Answer: True

Select The Blank
Question: The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer: Continue
Your Answer: Loop

Multiple Choice Multiple Answer
Question: Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer: Classes , Subclasses , Packages
Your Answer: Classes , Subclasses , Packages

Multiple Choice Multiple Answer
Question: Which statements can be used with the java's loop?
Correct Answer: Jump , Continue , Break
Your Answer: Continue , Break

Multiple Choice Single Answer
Question: Which Control Statement allow the program to execute in a non-linear fashion?
Correct Answer: Jump
Your Answer: Jump

True/False
Question: In While loop condition can be any Boolean _expression
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which is a public static member of thread?
Correct Answer: currenthread( ) , mainthread( )
Your Answer: mainthread( ) , Staticthread( )

True/False
Question: Object oriented programming organizes a program around processes acting on data.
Correct Answer: False
Your Answer: True

Select The Blank
Question: ________ are stored in hierarchical manner.
Correct Answer: Packages
Your Answer: Objects

Multiple Choice Single Answer
Question: Which statement has a the effect of "jumping out" of the switch statement?
Correct Answer: Break
Your Answer: Break

Multiple Choice Multiple Answer
Question: Which are the java's control statements?
Correct Answer: For , If , Switch
Your Answer: For , If , Switch

Multiple Choice Single Answer
Question: Which statement defines a name space in which classes are stored?
Correct Answer: package
Your Answer: class

Select The Blank
Question: Threads define several ________.
Correct Answer: constructors
Your Answer: constructors

Multiple Choice Multiple Answer
Question: What are different data types in java?
Correct Answer: char , double , byte
Your Answer: char , double , byte

True/False
Question: There is no Global Variable in Java.
Correct Answer: True
Your Answer: True

Match The Following
Question Correct Answer Your Answer
Object Instance of Class Member of Class
Methods Member of Class Instance of Class
Stack First In, Last Out First In, Last Out
Class Object Oriented Programming Object Oriented Programming

True/False
Question: Boolean values can be cast into any other primitive type.
Correct Answer: False
Your Answer: False

True/False
Question: Short data type range is -30,376 to 32768.
Correct Answer: False
Your Answer: True

Multiple Choice Single Answer
Question: How array is defined?
Correct Answer: int arr[];
Your Answer: int arr[];

Select The Blank
Question: In ________ statement condition is true, then statement 1 is executed.
Correct Answer: If
Your Answer: If

Match The Following
Question Correct Answer Your Answer
Derived class Subclass of protection Subclass of protection
Class Interface Directories
Packages Directories Interface
Specifier Protected Excpetion

Multiple Choice Multiple Answer
Question: _Expression must be of the data types :-
Correct Answer: Byte , Short , Int
Your Answer: Byte , Short , Int

Multiple Choice Single Answer
Question: What is an array?
Correct Answer: It is value collection of same type of data type
Your Answer: It is value collection of same type of data type

Multiple Choice Single Answer
Question: Which Control Statements allow the program to choose different paths of execution?
Correct Answer: Selection
Your Answer: Selection

Select The Blank
Question: ________ is referred by a variable candidate for garbage collection when the variable goes out of scope.
Correct Answer: Objects
Your Answer: Methods

Select The Blank
Question: The Process by which one object acquires properties of another object is ________.
Correct Answer: Inheritence
Your Answer: Inheritence

True/False
Question: Threads of equal priority must voluntarily yield control to their peers.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: How multidimensional array is declared?
Correct Answer: int[4] [5];
Your Answer: char[4,5]

Select The Blank
Question: ________ method suspends a thread for some period of time.
Correct Answer: sleep( )
Your Answer: sleep( )

True/False
Question: Suppose a given instance variable has been declared private, this instance variable is manipulated by methods outside its class.
Correct Answer: False
Your Answer: False

Multiple Choice Multiple Answer
Question: Features of Java applets are :-
Correct Answer: They can be transmitted over internet , Require java enabled web browser
Your Answer: They can be transmitted over internet , They require web server for their operation , Require java enabled web browser

True/False
Question: Boolean data type have only Yes or No value.
Correct Answer: True
Your Answer: True

Multiple Choice Single Answer
Question: class conditional { public static void main(String args[]) { int i = 20; int j = 55; int z = 0; z = i < j ? i : j; // ternary operator System.out.println("The value assigned is " + z); } } } What is output of the above program? Correct Answer: The value assigned is 20
Your Answer: The value assigned is 20

Multiple Choice Multiple Answer
Question: Classes usually consist of two things such as :-
Correct Answer: Instance variable , Methods
Your Answer: Methods , Objects

Select The Blank
Question: The most commonly used ________eger type is int.
Correct Answer: int
Your Answer: int

Select The Blank
Question: The range of Byte is ________
Correct Answer: (-128 to 127)
Your Answer: (-128 to 127)

True/False
Question: User-defined package can also be imported just like the standard packages.
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Java defines two ways when instantiating an object, such as :-
Correct Answer: Can implement the runnable interface , Can extend the thread class
Your Answer: Can extend the thread class , Class object

Multiple Choice Single Answer
Question: Which method is used to determine the class of an object?
Correct Answer: getClass( ) method
Your Answer: getClass( ) method

Multiple Choice Single Answer
Question: If you do not implement all the methods of an interface while implementing, what specifier should you use for the class ?
Correct Answer: abtract
Your Answer: abtract

Multiple Choice Multiple Answer
Question: Main thread is important for which two reasons?
Correct Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions
Your Answer: It is thread from which other "child" thread will be swapped , Often it must be the last thread to finish execution because It performs various shutdown actions , It is main thread

Select The Blank
Question: The ________ repeat a set of code while the condition is false.
Correct Answer: While loop
Your Answer: While loop

Select The Blank
Question: A class can only inherit a single ________.
Correct Answer: Superclass
Your Answer: Superclass

Multiple Choice Multiple Answer
Question: Which of these lines of code will compile?
Correct Answer: short s = 20; , char c = 32; , double d = 1.4;
Your Answer: byte b = 128; , char c = 32;

Multiple Choice Multiple Answer
Question: Packages act as containers for :-
Correct Answer: Classes , Subordinate packages
Your Answer: Classes , Subordinate packages , Subclasses

Multiple Choice Single Answer
Question: Syntax to declare a variable in java is :-
Correct Answer: type identifier [=value][,identifier[=value]…]
Your Answer: type identifier [=value][,identifier[=value]…]

Multiple Choice Single Answer
Question: How can class be imported from a package to a program?
Correct Answer: import java.packagename.classname
Your Answer: import java.packagename.classname

True/False
Question: Do while loop always executes its body at least once, because its conditional _expression is at the bottom of the loop.
Correct Answer: True
Your Answer: True

Select The Blank
Question: The ________ is similar to break, except that instead of halting the execution of the loop, it starts the next iteration.
Correct Answer: Continue
Your Answer: Loop

Multiple Choice Multiple Answer
Question: Within what Java provides many levels of protection to allow control over the visiblity of variables and methods?
Correct Answer: Classes , Subclasses , Packages
Your Answer: Classes , Subclasses , Packages

Multiple Choice Multiple Answer
Question: Which statements can be used with the java's loop?
Correct Answer: Jump , Continue , Break
Your Answer: Continue , Break

Multiple Choice Single Answer
Question: Which Control Statement allow the program to execute in a non-linear fashion?
Correct Answer: Jump
Your Answer: Jump

True/False
Question: In While loop condition can be any Boolean _expression
Correct Answer: True
Your Answer: True

Multiple Choice Multiple Answer
Question: Which is a public static member of thread?
Correct Answer: currenthread( ) , mainthread( )
Your Answer: mainthread( ) , Staticthread( )





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