Here you can find the source of rename(File from, File to)
public static void rename(File from, File to) throws Exception
//package com.java2s; /******************************************************************************* * Copyright 2012 Jack Wang/* w ww. ja v a 2 s .c o m*/ * * 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; public class Main { public static void rename(File from, File to) throws Exception { if (!from.exists()) { throw new Exception("Rename failed as " + from + " does not exists"); } if (to.exists()) { throw new Exception("Rename failed as " + to + " already exists"); } from.renameTo(to); for (int i = 0; from.exists() && !to.exists() && i < 20; i++) { from.renameTo(to); Thread.sleep(200); } if (!to.exists()) { throw new Exception("Unable to rename from " + from + " to " + to); } } }