Bitwise Operator | and &

Hello Members,
How can we use these operators.
Mudassar

Dear Mudassar,
To solve these operators you must first of all now the truth tables of both operators

Let you have two operands A and B


Evaluation of & operator

A B A & B
0 0 0
0 1 0
1 0 0
1 1 1

Evaluation of | operator


A B A | B
0 0 0
0 1 1
1 0 1
1 1 1


It means you need to have bits that is binary representation of your values
So

Decimal Binary
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
8 1000
9 1001
10 1010
11 1011


Now consider following examples

1. System.out.println("3 & 3 " +( 3 & 3));
3 & 3
Binary of 3 = 0011
0 0 1 1
&
0 0 1 1
_______
0 0 1 1
0011 is the binay of 3 so result of System.out.println("3 & 3 = " +( 3 & 3)); is “3 & 3= 3"

2. System.out.println("3 & 6 "+(3 & 6));

Binary of 3 = 0011
Binary of 6 = 0110
0 0 1 1
&
0 1 1 0
_______
0 0 1 0
0 0 1 0 is binary of 2 so result of System.out.println("3 & 6 = "+(3 & 6)); is “3 & 6 = 2”

3. System.out.println( 3 | 7);
Binary of 3 = 0011
Binary of 7 = 0111
0 0 1 1
&
0 1 1 1
_______
0 1 1 1
0 1 1 1 is binary of 7 so result of System.out.println( 3 | 7); is “7”

I hope this will be helpfull
Saadia