Java MCQs with answers Page - 20

Here, you will find a collection of MCQ questions on Java. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

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Q. A ------------- is a component that can hold other components.

  • (A) A window
  • (B) a container
  • (C) A control
  • (D) a form

A

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Q. The method that returns the selected item from a List component is

  • (A) getSelected()
  • (B) getSelectedString()
  • (C) getSelectedItem()
  • (D) getSelectedData()

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Q. The class used to make a standalone application in java.

  • (A) Applet
  • (B) Panel
  • (C) Frame
  • (D) Form

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Q. ------------------- is an example of container class

  • (A) Label
  • (B) Panel
  • (C) TextField
  • (D) Button

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Q. The class used to encapsulate fonts is

  • (A) Graphics
  • (B) Font
  • (C) Applet
  • (D) Component

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Q. Number of primitive data types in Java are?

  • (A) 6
  • (B) 7
  • (C) 8
  • (D) 9

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Q. What is the size of float and double in java?

  • (A) 32 and 64
  • (B) 32 and 32
  • (C) 64 and 64
  • (D) 64 and 32

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Q. Automatic type conversion is possible in which of the possible cases?

  • (A) Byte to int
  • (B) Int to long
  • (C) Long to int
  • (D) Short to int

A

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Q. Find the output of the following code

Code:
int Integer = 24;
char String  = ‘I’;
System.out.print(Integer);
System.out.print(String);
  • (A) Compile error
  • (B) Throws exception
  • (C) I
  • (D) 24 I

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Q. Find the output of the following program.

Code:
public class Solution{
       public static void main(String[] args){
                     short x = 10;
                     x =  x * 5;
                     System.out.print(x);
       }
}
  • (A) 50
  • (B) 10
  • (C) Compile error
  • (D) Exception