JAVA

Which control structure is used to execute a block of code multiple times?

2 Mark(s)

.if
switch-case
for
try-catch

Which class provides system independent server side implementation?

2 Mark(s)

Server
ServerReader
Socket
ServerSocket

. What is the numerical range of a char data type in Java?

2 Mark(s)

0 to 256
-128 to 127
0 to 65535
) 0 to 32767

What will be the output of the following Java program?

2 Mark(s)

2 2
3 3
Runtime Error
Compilation Error

What will be the output of the following Java program?

2 Mark(s)

www.sanfoundry.com
https://www.sanfoundry.com/javamcq
sanfoundry
sanfoundry.com

Which of the below is not a Java Profiler?

2 Mark(s)

JProfiler
Eclipse Profiler
JVM
JConsole

What will be the output of the following Java program?

2 Mark(s)

127
126
Runtime Error
Compilation Error

What will be the output of the following Java code?

2 Mark(s)

5
2
4
0.3

. What will be the output of the following Java program?

2 Mark(s)

NaN
Infinity
0.0
all of the mentioned

Which environment variable is used to set the java path?

2 Mark(s)

MAVEN_Path
JavaPATH
JAVA
JAVA_HOME

Which one of the following is not an access modifier?

2 Mark(s)

Protected
Void
Public
Private

What will be the output of the following Java program?

2 Mark(s)

4 6.4
6.4 6
6.4 6.4
6 6

Which of the following is true about servlets?

2 Mark(s)

Servlets can use the full functionality of the Java class libraries
Servlets execute within the address space of web server, platform independent and uses the functionality of java class libraries
Servlets execute within the address space of web server
Servlets are platform-independent because they are written in java

What is the purpose of the PATH environment variable in Java?

2 Mark(s)

To locate Java libraries
To store Java bytecode
To Locate the exe files (.exe)
To optimize Java code

Determine the output.

2 Mark(s)

Even
Odd
Error
no out put

Which keyword is used to exit a loop prematurely in Java?

2 Mark(s)

break
continue
exit
stop

What is the difference between 'while' and 'do-while' loops in Java?

2 Mark(s)

Syntax only
The do-while loop executes at least once
Execution speed
No difference

Which class is commonly used for simple keyboard input in Java?

2 Mark(s)

Scanner
InputStream
BufferedReader
FileReader

In Java, what is the default value of an array of integers?

2 Mark(s)

0
null
1
-1

Which keyword is used to define a constant variable in Java?

2 Mark(s)

final
static
const
immutable

What is the result of this operation in Java?

2 Mark(s)

7
7.9
8
Syntax Error

What is the default value of a boolean variable in Java?

2 Mark(s)

TRUE
FALSE
0
NULL

What is multithreaded programming?

2 Mark(s)

It’s a process in which two different processes run simultaneously
It’s a process in which two or more parts of the same process run simultaneously
It’s a process in which many different process are able to access the same information
It’s a process in which a single process can access information from many sources

In Java, how should class names be written?

2 Mark(s)

.camelCase
snake_case
PascalCase
.kebab-case

What will be the output of the following Java code?

2 Mark(s)

truetrue
falsefalse
true
FALSE

Which of these keywords are used for the block to be examined for exceptions?

2 Mark(s)

check
throw
catch
try

What will be the output of the following Java code?

2 Mark(s)

a b c
a
b
c

. Which exception is thrown when java is out of memory?

2 Mark(s)

MemoryError
OutOfMemoryError
MemoryOutOfBoundsException
MemoryFullException

What is the extension of compiled java classes?

2 Mark(s)

.txt
.js
.class
.java

What will be the output of the following Java code snippet?

2 Mark(s)

The snippet compiles and runs but does not print anything
The snippet compiles, runs and prints 0
The snippet compiles, runs and prints 1
The snippet does not compile

What will be the output of the following Java program?

2 Mark(s)

1 2 3 4 5
1 2 3 4
1 2
1 2 3

What is Truncation in Java?

2 Mark(s)

Floating-point value assigned to a Floating type
Floating-point value assigned to an integer type
Integer value assigned to floating type
Integer value assigned to floating type

What will be the output of the following Java code?

2 Mark(s)

100
400
200
12

What will be the output of the following Java program?

2 Mark(s)

0 256
0 64
256 0
64 0

Which of the following is a type of polymorphism in Java Programming?

2 Mark(s)

Multiple polymorphism
Compile time polymorphism
Multilevel polymorphism
Execution time polymorphism

What will be the output of the following Java program?

2 Mark(s)

Compilation error
Runtime error
5 6 5 6
5 6 5

Which of these are selection statements in Java?

2 Mark(s)

break
continue
for()
if()

What will be the output of the following Java program?

2 Mark(s)

1
120
0
None of the mentioned

What will be the output of the following Java code?

2 Mark(s)

0
true
1
false

Which of these statements is incorrect about Thread?

2 Mark(s)

start() method is used to begin execution of the thread
un() method is used to begin execution of a thread before start() method in special cases
A thread can be formed by implementing Runnable interface only
A thread can be formed by a class that extends Thread class

What will be the output of the following Java program?

2 Mark(s)

1 2 5 8
2 1 8 5
1 5 8 2
2 8 5 1

. Which of these packages contains the exception Stack Overflow in Java?

2 Mark(s)

java.io
java.system
java.lang
java.util

. What will be the output of the following Java code snippet?

2 Mark(s)

[A, D, C]
[A,B,C]
[A, B, C, D]
[A, D, B, C]

Which of the following is a superclass of every class in Java?

2 Mark(s)

ArrayList
Abstract class
Object class
String

. What will be the output of the following Java program?

2 Mark(s)

9.0
8.0
4.0
2.0

Which of the following is not an OOPS concept in Java?

2 Mark(s)

Polymorphism
Inheritance
Compilation
Encapsulation

What will be the output of the following Java code?

2 Mark(s)

257
256
1
0

. What will be the output of the following Java program?

2 Mark(s)

QuizziuQ
ziuQQuiz
Quiz
ziuQ

Which of these keywords is used to define interfaces in Java?

2 Mark(s)

intf
Intf
interface
Interface

What is not the use of “this” keyword in Java?

2 Mark(s)

Referring to the instance variable when a local variable has the same name
Passing itself to the method of the same class
Passing itself to another method
Calling another constructor in constructor chaining

JAVA : Question 1 of 50

Which control structure is used to execute a block of code multiple times?

Which control structure is used to execute a block of code multiple times?

What is the purpose of the PATH environment variable in Java?

What is the purpose of the PATH environment variable in Java?

Determine the output.

Determine the output.

Which keyword is used to exit a loop prematurely in Java?

Which keyword is used to exit a loop prematurely in Java?

What is the difference between 'while' and 'do-while' loops in Java?

What is the difference between 'while' and 'do-while' loops in Java?

Which class is commonly used for simple keyboard input in Java?

Which class is commonly used for simple keyboard input in Java?

In Java, what is the default value of an array of integers?

In Java, what is the default value of an array of integers?

Which keyword is used to define a constant variable in Java?

Which keyword is used to define a constant variable in Java?

What is the result of this operation in Java?

What is the result of this operation in Java?

What is the default value of a boolean variable in Java?

What is the default value of a boolean variable in Java?

What is multithreaded programming?

What is multithreaded programming?

In Java, how should class names be written?

In Java, how should class names be written?