Java Programming - 2
LIST OF ATTEMPTED QUESTIONS AND ANSWERS
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 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
