Here you can find the source of copyFile(File fromFile, File toFile)
private static void copyFile(File fromFile, File toFile) throws IOException
//package com.java2s; /*//from w w w . j av a 2 s.c o m * Copyright (c) 2007-2011 by The Broad Institute of MIT and Harvard. All Rights Reserved. * * This software is licensed under the terms of the GNU Lesser General Public License (LGPL), * Version 2.1 which is available at http://www.opensource.org/licenses/lgpl-2.1.php. * * THE SOFTWARE IS PROVIDED "AS IS." THE BROAD AND MIT MAKE NO REPRESENTATIONS OR * WARRANTES OF ANY KIND CONCERNING THE SOFTWARE, EXPRESS OR IMPLIED, INCLUDING, * WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT OR OTHER DEFECTS, WHETHER * OR NOT DISCOVERABLE. IN NO EVENT SHALL THE BROAD OR MIT, OR THEIR RESPECTIVE * TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES, AND AFFILIATES BE LIABLE FOR ANY DAMAGES * OF ANY KIND, INCLUDING, WITHOUT LIMITATION, INCIDENTAL OR CONSEQUENTIAL DAMAGES, * ECONOMIC DAMAGES OR INJURY TO PROPERTY AND LOST PROFITS, REGARDLESS OF WHETHER * THE BROAD OR MIT SHALL BE ADVISED, SHALL HAVE OTHER REASON TO KNOW, OR IN FACT * SHALL KNOW OF THE POSSIBILITY OF THE FOREGOING. */ import java.io.*; public class Main { private static void copyFile(File fromFile, File toFile) throws IOException { System.out.println("cp " + fromFile.getName() + " " + toFile.getName()); Runtime.getRuntime().exec("cp " + fromFile.getAbsolutePath() + " " + toFile.getAbsolutePath()); } }