Here you can find the source of copyFile(String sourceFileName, String destinationFileName)
public static void copyFile(String sourceFileName, String destinationFileName)
//package com.java2s; /*//ww w . j a v a2s .c om * Copyright 2004-2005 Germinus XXI, Liferay LLC * * 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. * * This is a derived work from source code taken from Liferay. */ import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.nio.channels.FileChannel; public class Main { public static void copyFile(String sourceFileName, String destinationFileName) { copyFile(new File(sourceFileName), new File(destinationFileName)); } public static void copyFile(File source, File destination) { if (!source.exists()) { return; } if ((destination.getParentFile() != null) && (!destination.getParentFile().exists())) { destination.getParentFile().mkdirs(); } try { FileChannel srcChannel = new FileInputStream(source).getChannel(); FileChannel dstChannel = new FileOutputStream(destination).getChannel(); dstChannel.transferFrom(srcChannel, 0, srcChannel.size()); srcChannel.close(); dstChannel.close(); } catch (IOException ioe) { ioe.printStackTrace(); } } public static boolean exists(String fileName) { File file = new File(fileName); return file.exists(); } public static void mkdirs(String pathName) { File file = new File(pathName); file.mkdirs(); } }