Java tutorial
//package com.java2s; /* * Created by Angel Leon (@gubatron), Alden Torres (aldenml) * Copyright (c) 2011, 2012, FrostWire(TM). All rights reserved. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.UUID; public class Main { public static byte[] uuidToByteArray(UUID uuid) { long msb = uuid.getMostSignificantBits(); long lsb = uuid.getLeastSignificantBits(); byte[] buffer = new byte[16]; for (int i = 0; i < 8; i++) { buffer[i] = (byte) (msb >>> 8 * (7 - i)); } for (int i = 8; i < 16; i++) { buffer[i] = (byte) (lsb >>> 8 * (7 - i)); } return buffer; } }