Here you can find the source of randomFileName()
public static String randomFileName()
//package com.java2s; /*********************************************************************************************************************** * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu) * * 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. **********************************************************************************************************************/ public class Main { private static final String FILE_PREFIX = "pact_test_"; private static final String FILE_SUFFIX = ".tmp"; public static String randomFileName() { return FILE_PREFIX + ((int) (Math.random() * Integer.MAX_VALUE)) + FILE_SUFFIX; }//from w w w. j a v a 2 s. co m }