Java Programming - 21

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 dowhile

loop

Your Answer Sequential , Selection -- if and switch statements , Iteration -- for loop, while loop and dowhile

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