Java: Convert Byte to Binary String Example

We can make use of the toBinaryString() from the Integer class to convert a byte to binary String in Java.

Let us take a look at a few examples.

Example 1: Convert Single Byte to Binary String

package org.code2care.examples;

public class Example1 {

    public static void main(String[] args) {
        byte b = 101;
        String binaryString = Integer.toBinaryString(b);
        System.out.println("Byte: " + b);
        System.out.println("Binary String: " + binaryString);
    }

}

Output:

Example 2: Convert Byte Array to Binary String

public static void main(String[] args) {

        StringBuilder binaryStringBuilder = new StringBuilder();
        byte[] byteArray = { 101, 102, 103, 127, -101, 1, 0 };

        for (byte b : byteArray) {
            binaryStringBuilder.append(Integer.toBinaryString(b & 0xFF));
        }

        System.out.println("Binary String: " + binaryStringBuilder);
    }

Output: