Here you can find the source of macToString(byte[] mac)
public static String macToString(byte[] mac)
//package com.java2s; /*//from w w w . j a va 2 s .com * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ public class Main { public static String macToString(byte[] mac) { StringBuilder b = new StringBuilder(); for (int i = 0; i < mac.length; i++) { b.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? ":" : "")); } return b.toString(); } }