Bitwise Operators in Java

Bitwise operators are used to perform the manipulation of individual bits of a number. They can be used with any integral type (char, short, int, etc.). They are used when performing update and query operations of the Binary indexed trees. 

1. Bitwise OR (|) 

This operator is a binary operator, denoted by ‘|’. It returns bit by bit OR of input values, i.e., if either of the bits is 1, it gives 1, else it shows 0. 

Example:

a = 5 = 0101 (In Binary)
b = 7 = 0111 (In Binary)

Bitwise OR Operation of 5 and 7
  0101
| 0111
 ________
  0111  = 7 (In decimal) 

2. Bitwise AND (&)

This operator is a binary operator, denoted by ‘&.’ It returns bit by bit AND of input values, i.e., if both bits are 1, it gives 1, else it shows 0. 

Example:

a = 5 = 0101 (In Binary)
b = 7 = 0111 (In Binary)

Bitwise AND Operation of 5 and 7
  0101
& 0111
 ________
  0101  = 5 (In decimal) 

 

3. Bitwise XOR (^) 

This operator is a binary operator, denoted by ‘^.’ It returns bit by bit XOR of input values, i.e., if corresponding bits are different, it gives 1, else it shows 0. 

Example:

a = 5 = 0101 (In Binary)
b = 7 = 0111 (In Binary)

Bitwise XOR Operation of 5 and 7
  0101
^ 0111
 ________
  0010  = 2 (In decimal) 

4. Bitwise Complement (~)

This operator is a unary operator, denoted by ‘~.’ It returns the one’s complement representation of the input value, i.e., with all bits inverted, which means it makes every 0 to 1, and every 1 to 0. 

Example:

a = 5 = 0101 (In Binary)

Bitwise Complement Operation of 5

~ 0101
 ________
  1010  = 10 (In decimal) 

Note: Compiler will give 2’s complement of that number, i.e., 2’s complement of 10 will be -6.