import java.util.Base64; public class Base64Example { public static void main(String[] args) { byte[] data = {0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE}; String encodedData = Base64.getEncoder().encodeToString(data); byte[] decodedData = Base64.getDecoder().decode(encodedData); } }