Here you can find the source of generateUniqueString()
public static String generateUniqueString()
//package com.java2s; /**************************************************************************** * Copyright 2015 Valerio Morsella * * * * 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. * ****************************************************************************/ import java.util.UUID; public class Main { public static String generateUniqueString() { String uniqueKey = UUID.randomUUID().toString(); return uniqueKey.replaceAll("-", ""); }//from w w w. j a v a2 s. c om }