Java Bitwise AND operator

In this tutorial, we will learn about the Java Bitwise AND operator with a simple Java program. The bitwise AND operator produces 1 if the corresponding bits in both operands are 1; otherwise, it produces zero. The (&) is the bitwise AND operation symbol.

Table

The outcomes table with the bitwise AND operator is shown as follows:

Operand: A	Operand: B	Bitwise AND : A&B
0	0	0
0	1	0
1	0	0
1	1	1

Code

Sample Java program to demo the operator usage.

/* 
 * Java Program to demonstrate 
 * Bitwise AND Operator.
 * Java Tutorials -- www.TestingDocs.com 
 */
public class BitwiseANDDemo {
 public static void main(String args[])
 {
 //Declare two variables
 int A = 1;
 int B = 0;
 System.out.println("A & B =: " + (A&B));
 A = 1;
 B = 1;
 System.out.println("A & B =: " + (A&B));
 }
}

Sample output

A & B =: 0
A & B =: 1

 

Notice that the result is 1 if the individual bits had a 1 for both the operands A and B.

Exercise

1. The above program displays the two rows of the outcome table. Modify the A and B values to check the other rows of the outcome table.

2. Run the following program and check the output. The program masks the bits of the variable A except the lower 4 bits. 0x0F is a hexadecimal number which is equivalent to 15 in the decimal number format.
It represents the lower four bits and translates to the bit pattern 0000 1111.

 

public class BitwiseExerciseDemo {
 public static void main(String args[])
 {
 //Declare two variables
 int A = 173;
 int bitmask = 0x000F; //mask other bits except the lower 4 bits
 System.out.println("Result =: " + (A & bitmask));
 }
}

 

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