Java Programming - 1

LIST OF ATTEMPTED QUESTIONS AND ANSWERS

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