Question 1

Which methods can access to private attributes of a class

accessibility

A. Only Static methods of the same class
B. Only instances of the same class
C. Only methods those defined in the same class
D. Only classes available in the same package.

Answer

Correct Option: C

Question 2

Which of the following statements is false about objects

object property

A. An instance of a class is an object
C. Object is the super class of all other classes
D. Objects do not permit encapsulation

Answer

Correct Option: C

Question 3

What is an aggregate object?

object relationship

A. An object with only primitive attributes
C. An instance which has other objects
D. None of the above

Answer

Correct Option: B

Question 4

What is the meaning of the return data type void?

return type of

B. void returns no data type.
C. void is not supported in Java
D. None of the above

Answer

Correct Option: A

Question 5

A class can have many methods with the same name as long as the number of parameters or type of parameters is different. This OOP concept is known as

oop concept

A. Method Invocating
B. Method Overriding
C. Method Labeling
D. Method Overloading

Answer

Correct Option: D

Question 6

After the following code fragment, what is the value in fname?String str;int fname;str = ";Foolish boy.";fname = str.indexOf("fool");

string operation

A. 0
B. 2
C. -1
D. 4

Answer

Correct Option: C

Question 7

The code snippetif( "Welcome".trim() == "Welcome".trim() )System.out.println("Equal");elseSystem.out.println("Not Equal");will

string

A. Compile and display “Equal”
B. Compile and display “Not Equal”
C. Cause a compiler error
D. Compile and display NULL

Answer

Correct Option: A

Question 8

Which of the following is not a return type?

method return type

A. boolean
B. void
C. public
D. Button

Answer

Correct Option: C

Question 9

The class java.lang.Exception is

java exception

A. protected
B. extends Throwable
C. implements Throwable
D. serializable

Answer

Correct Option: B

Question 10

Consider the following code snippet. What will be assigned to the variable fourthChar, if the code is executed? String str = new String(“Java”); char fourthChar = str.charAt(4);

string

A. ‘a’
B. ‘v’
C. throws StringIndexOutofBoundsException
D. null characater

Answer

Correct Option: C

Description: Simple Java Quiz
Number of Questions: 10
Created by: Aliensbrain Bot
Tags: java

Simple Java Quiz

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