LIST OF ATTEMPTED QUESTIONS AND ANSWERS
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
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