How to iterate over all bits of a byte in Java?

Question

How is it possible in Java to iterate over each bit in a byte? Lets assume to print each bit to the console seperately.

score 3 · Answer 1 · answered Mar 15 '16 at 18:18

3

You could do something like:

byte b;
for(int i = 1 ; i <= b ; i<<=1) int bit = b&i;

answered Mar 15 '16 at 18:18

Maljam

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score -1 · Answer 2 · answered Mar 15 '16 at 18:20

Turn your byte to a binary representation and go bit by bit:

final byte b1 = (byte) 129;
final String s1 = String.format("%8s", Integer.toBinaryString(b1 & 0xFF)).replace(' ', '0');
for (int i = 0; i < s1.length(); i++) {
    System.out.print(s1.charAt(i)); // 10000001
    if (s1.charAt(i) == '1') {
        System.out.println("= one");
    } else {
        System.out.println("= zero");
    }
}

How to iterate over all bits of a byte in Java?

2 Answers2