Here you can find the source of copyDirectory(final File source, final File destination)
public static final void copyDirectory(final File source, final File destination) throws IOException
//package com.java2s; /*// w w w . ja va 2s .co m * Copyright 2010-2012 Luca Garulli (l.garulli--at--orientechnologies.com) * * 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; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.nio.channels.FileChannel; public class Main { public static final void copyDirectory(final File source, final File destination) throws IOException { if (!destination.exists()) destination.mkdirs(); for (File f : source.listFiles()) { final File target = new File(destination.getAbsolutePath() + "/" + f.getName()); if (f.isFile()) copyFile(f, target); else copyDirectory(f, target); } } @SuppressWarnings("resource") public static final void copyFile(final File source, final File destination) throws IOException { FileChannel sourceChannel = new FileInputStream(source) .getChannel(); FileChannel targetChannel = new FileOutputStream(destination) .getChannel(); sourceChannel.transferTo(0, sourceChannel.size(), targetChannel); sourceChannel.close(); targetChannel.close(); } }