When Bit wise operators are used on operands, they convert the numbers into binary system and then apply bitwise operators. Bit wise operators in Java are:
§ Bitwise AND ( & )
§ Bitwise OR ( | )
§ Bitwise XOR ( ^ )
§ Left shift operator ( << )
§ Right shift operator ( >> )
§ Right shift with zero fill ( >>> )
§ Complement operator (~)
Bitwise AND ( & ): The result of applying AND an bits is 1 if both are 1; otherwise 0.
Ex:
X = 1101
Y = 1110
X & Y = 1100
Bitwise OR ( | ): The result of OR operation is 1 if at least one of the bits has a value 1; otherwise it is 0
Ex:
X = 1101
Y = 1110
X | Y = 1111
Bitwise XOR ( ^ ): The result of XOR is 1 if only one of the bits is 1;
otherwise 0
Ex:
X = 1101
Y= 1110
X ^ Y = 0011
Left shift ( << ): shifts ‘n’ bits left
Ex:
X = 0000 0000 1011 1101
X<<3= 0000 0101 1110 1000
Right shift ( >> ): shifts ‘n’ bits right
Ex:
X = 0000 0000 1011 1101
X>>3= 0000 0000 0001 0111
Complement ( ~): It inverts all the bits. It is a unary operator. Complement of 1 is 0 and complement of 0 is 1.
Ex:
X = 1011
~X =1111 1111 1111 0100
Truth Table:
A | B | A & B | A | B | A ^ B |
0 | 0 | 0 | 0 | 0 |
1 | 0 | 0 | 1 | 1 |
0 | 1 | 0 | 1 | 1 |
1 | 1 | 1 | 1 | 0 |
Example:
class p1
{
public static void main(String as[])
{
System.out.println(13&14); // prints 12
System.out.println(13|14); // prints 15
System.out.println(13^14); // prints 3
System.out.println(50<<3); // prints 400
System.out.println(50>>4); // prints 3
System.out.println(50>>>3); // prints 6
System.out.println(~5); // prints -6
}
}
1 comments:
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