Java Programming(22412)

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Online Quiz for Second Year Computer Group(CO/CM/IF)

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College Name *

1.Which of the following option leads to the portability and security of Java? *

2 points

Bytecode is executed by JVM

The applet makes the Java code secure and portable

Use of exception handling

Dynamic binding between objects

2.Which of the following is not a Java features? *

2 points

Dynamic

Architecture Neutral

Use of pointers

Object-oriented

3._____ is used to find and fix bugs in the Java programs. *

2 points

JVM

JRE

JDK

JDB

4.What does the expression float a = 35 / 0 return? *

2 points

Not a Number

Infinity

Run time exception

5.Which option is false about the final keyword? *

2 points

A final method cannot be overridden in its subclasses.

A final class cannot be extended.

A final class cannot extend other classes.

A final method can be inherited.

6.Which inheritance in java programming is not supported *

2 points

Multiple inheritance using classes

Multiple inheritance using interfaces

Multilevel inheritance

Single inheritance

7.What is subclass in java? *

2 points

A subclass is a class that extends another class

A subclass is a class declared inside a class

Both above.

None of the above.

8.Output: Base class *

2 points

class B:A{}

class B extends A{}

class B extends class A{}

class B implements A{}

9.Which of these keywords must be used to inherit a class? *

2 points

super

this

extent

extends

10.Which of these keywords is used to refer to a member of the base class from a subclass? *

2 points

upper

super

this

none of the mentioned

The class at the top of the exception class hierarchy is ................. *

2 points

ArithmeticException

Throwable

Object

Exception

12.The built-in base class in Java, which is used to handle all exceptions is *

2 points

Run Time

Compilation Time

Can Occur Any Time

None of the mentioned

13.Which of these keywords is not a part of exception handling *

2 points

try

finally

thrown

catch

14. *

2 points

Compiler Error

Compiles and runs fine

Compiles fine but throws ArithmeticException exception

None of the Above

15. …………………….. exception is thrown when an attempt is made to access an array element beyond the index of the array. *

2 points

Throwable

Restricted

Security

ArrayIndexOutofBounds

16.Every try statement should be followed by at least one catch statement; otherwise …………………. will occur. *

2 points

no execution

null

zero

compilation error

17.Which of these functions is called to display the output of an applet? *

2 points

display()

print()

displayApplet()

PrintApplet()

18.Which of these methods can be used to output a string in an applet? *

2 points

display()

print()

drawString()

transient()

19.What does AWT stand for? *

2 points

All Window Tools

All Writing Tools

Abstract Window Toolkit

Abstract Writing Toolkit

20.Which of these methods is a part of Abstract Window Toolkit (AWT)? *

2 points

display()

print()

drawString()

transient()

21.Which keyword is used for accessing the features of a package? *

2 points

package

import

extends

export

22.Which of these is used to perform all input & output operations in Java? *

2 points

streams

Variables

classes

Methods

23.System class is defined in ................. *

2 points

java.util package

java.lang package

java.io package

java.awt package

24.Which of these classes defined in java.io and used for file-handling are abstract? *

2 points

InputStream

PrintStream

Reader

FileInputStream

Required

25.Which of these packages contain classes and interfaces used for input & output operations of a program? *

2 points

java.util

java.lang

java.io

All of the mentioned

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