Here you can find the source of getTempFile(String dir, String fileExt)
public static String getTempFile(String dir, String fileExt)
/*// w ww .j a v a2s. c om * Copyright 2006-2008 the original author or authors. * * 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.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Date; public class Main{ public static String getTempFile(String dir, String fileExt) { // String tempFileName = CommUtil.getRandString(8) + fileExt; String tempFileName = CommUtil.formatDate("yyMMdd-HHmmssS", new Date()) + fileExt; File file = new File(dir + "/" + tempFileName); if (file.exists()) return getTempFile(dir, fileExt); else return tempFileName; } }