Java tutorial
//package com.java2s; /* * Copyright 2012 Uwe Trottmann * * 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 { /** * Copies the contents of one file to the other using {@link FileChannel}s. * * @param src * source {@link File} * @param dst * destination {@link File} */ public static void copyFile(File src, File dst) throws IOException { FileInputStream in = new FileInputStream(src); FileOutputStream out = new FileOutputStream(dst); FileChannel inChannel = in.getChannel(); FileChannel outChannel = out.getChannel(); try { inChannel.transferTo(0, inChannel.size(), outChannel); } finally { if (inChannel != null) { inChannel.close(); } if (outChannel != null) { outChannel.close(); } } in.close(); out.close(); } }