Question

I have this byte/int 0001 0010 (18). I need to split this byte/int into

0001 0000 (16) and
0000 0010 (2).

How can I do that in Java?

Answer 1

& is bitwise AND. -16 is 11110000 in binary, 15 is 00001111.

public static byte[] split(byte input) {
    byte[] output = new byte[2];

    output[0] = (byte) (input & -16);
    output[1] = (byte) (input & 15);

    return output;
}