Here you can find the source of rename(String existingFile, String newFilename)
public static void rename(String existingFile, String newFilename)
//package com.java2s; /**//from w w w .j a va 2s. c om * Copyright 2000-2009 DFKI GmbH. * All Rights Reserved. Use is subject to license terms. * * This file is part of MARY TTS. * * MARY TTS is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, version 3 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ import java.io.File; public class Main { public static void rename(String existingFile, String newFilename) { if (exists(existingFile)) { File oldFile = new File(existingFile); oldFile.renameTo(new File(newFilename)); } } public static boolean exists(String file) { boolean bRet = false; if (file != null) { File f = new File(file); if (f.exists()) { bRet = true; } } return bRet; } }