Base64 encode / decode strings in Java (examples)

base64-encode-decode-string-example.java

/**
 * Because searching for a simple example of how to Base64 encode/decode in Java
 * that hasn't been deprecated since the Crimean War is an exercise in madness...
 *
 * Requires Java 8 or higher
 */
package hn.daniel;

import java.util.Base64;

public class HelloDarknessMyOldFriend {

    public static void main(String[] args) {

        // Input string
        String originalString = "Hello World!";
        System.out.println("Original String: " + originalString);

        // Encoded string
        String encodedString = Base64.getEncoder().encodeToString(originalString.getBytes());
        System.out.println("Encoded String: " + encodedString);

        // Decoded string
        byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
        String decodedString = new String(decodedBytes);
        System.out.println("Decoded String: " + decodedString);

    }

}