Java Programming
LIST OF ATTEMPTED QUESTIONS AND ANSWERS
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
