package com.ldr.common;

import java.util.HexFormat;

public class TTTTT {

static final HexFormat FORMAT = HexFormat.of();

public static void main(String[] args) {
    byte[] bytes = { 0x4a, 0x6f, 0x68, 0x6e };
    String hex = FORMAT.formatHex(bytes);
    System.out.println(hex);
    byte[] bytes1 = FORMAT.parseHex(hex);
    System.out.println(FORMAT.formatHex(bytes1));
}

}