In this post, we will look at how to convert String to Octet String in Java.

Octet string basically means byte array.

Program

Let’s have a look at the program.

import java.nio.charset.StandardCharsets;
import java.util.Arrays;

// Java program to demonstrate
// the how to convert
// string to octet string
public class OctetString {
        public static void main(String[] args) {
                // this string contains
                // important data
                String str = "importanData";
                // byte array representation
                // of string
                byte[] octetStr = str.getBytes(StandardCharsets.US_ASCII);
                System.out.println("Byte Array Representation is :");
                System.out.println(Arrays.toString(octetStr));
        }
}

Output:

Byte Array Representation is :
[105, 109, 112, 111, 114, 116, 97, 110, 68, 97, 116, 97]