Here you can find the source of bytesFrom(String hwAddress)
private static byte[] bytesFrom(String hwAddress)
//package com.java2s; /*/*www .ja va 2 s . c om*/ * 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 { private static byte[] bytesFrom(String hwAddress) { String[] mac = hwAddress.split(":"); byte[] macAddress = new byte[6]; // mac.length == 6 bytes for (int i = 0; i < mac.length; i++) { macAddress[i] = Integer.decode("0x" + mac[i]).byteValue(); } return macAddress; } }