Here you can find the source of getUUID()
public static String getUUID()
//package com.java2s; /*//from ww w . j a v a 2 s. c o m * #%L * Leo * %% * Copyright (C) 2010 - 2014 Department of Veterans Affairs * %% * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * #L% */ import java.util.*; public class Main { /** * Generate a random UUID string. * * @return String representation of a UUID */ public static String getUUID() { UUID id = UUID.randomUUID(); return id.toString(); } }