Java: Convert byte to binary string

Using 'Integer.toBinaryString' method, you can convert a byte to binary string.

Example

byte b1 = (byte) 255;

String s1 = String.format("%8s", Integer.toBinaryString(b1 & 0xFF)).replace(' ', '0');

App.java

package com.sample.app;

public class App {

    public static void main(String args[]) {
        byte b1 = (byte) 255;
        String s1 = String.format("%8s", Integer.toBinaryString(b1 & 0xFF)).replace(' ', '0');

        byte b2 = (byte) 127;
        String s2 = String.format("%8s", Integer.toBinaryString(b2 & 0xFF)).replace(' ', '0');

        System.out.println("255 in binary : " + s1);
        System.out.println("127 in binary : " + s2);

    }
}

Output

255 in binary : 11111111

127 in binary : 01111111

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