Here you can find the source of copyFile(File sourceFile, File destFile)
| Parameter | Description |
|---|---|
| sourceFile | The File to copy |
| destFile | The new File |
| Parameter | Description |
|---|---|
| Exception | if files cannot be read or written to |
public static void copyFile(File sourceFile, File destFile) throws Exception
//package com.java2s; /*/*w w w .j ava2s .c om*/ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common * Development and Distribution License("CDDL") (collectively, the * "License"). You may not use this file except in compliance with the * License. You can obtain a copy of the License at * http://www.netbeans.org/cddl-gplv2.html * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the * specific language governing permissions and limitations under the * License. When distributing the software, include this License Header * Notice in each file and include the License file at * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this * particular file as subject to the "Classpath" exception as provided * by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the * License Header, with the fields enclosed by brackets [] replaced by * your own identifying information: * "Portions Copyrighted [year] [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL * or only the GPL Version 2, indicate your decision by adding * "[Contributor] elects to include this software in this distribution * under the [CDDL or GPL Version 2] license." If you do not indicate a * single choice of license, a recipient has the option to distribute * your version of this file under either the CDDL, the GPL Version 2 or * to extend the choice of license to its licensees as provided above. * However, if you add GPL Version 2 code and therefore, elected the GPL * Version 2 license, then the option applies only if the new code is * made subject to such option by the copyright holder. */ import java.io.*; public class Main { /** * Copies the source file to the destination file * Also creates any interim directories needed * * @param sourceFile The File to copy * @param destFile The new File * @throws Exception if files cannot be read or written to */ public static void copyFile(File sourceFile, File destFile) throws Exception { if (!sourceFile.isFile()) throw new Exception("ERROR NOT A FILE: " + sourceFile.getPath()); // First ensure all needed destination directories are present File destParent = new File(destFile.getParent()); if (!destParent.exists()) { destParent.mkdirs(); } // if // Now copy the file FileInputStream from = null; FileOutputStream to = null; try { from = new FileInputStream(sourceFile); to = new FileOutputStream(destFile); byte[] buffer = new byte[4096]; int bytes_read; while ((bytes_read = from.read(buffer)) != -1) { to.write(buffer, 0, bytes_read); } // while } catch (Exception e) { e.printStackTrace(); throw new Exception("ERROR: Could not copy " + sourceFile.getPath() + " to " + destFile.getPath() + ". Details: " + e.getMessage()); } finally { if (from != null) try { from.close(); } catch (IOException e) { ; } if (to != null) try { to.close(); } catch (IOException e) { ; } } // try-catch } }