base64 encode

import java.util.Base64;

class Main {

  public static void main(String[] args) {

  // Encode

String originalInput = "test input";

String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());

System.out.println(encodedString); // Output will be: c29tZSBzdHJpbmc=

// Decode

byte[] decodedBytes = Base64.getDecoder().decode(encodedString);

String decodedString = new String(decodedBytes);

System.out.println(decodedString);

  }

}