Java tutorial
//package com.java2s; /* * Copyright (c) 2014,KJFrameForAndroid Open Source Project,. * * 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.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.nio.channels.FileChannel; public class Main { public static void copyFileFast(FileInputStream is, FileOutputStream os) throws IOException { FileChannel in = is.getChannel(); FileChannel out = os.getChannel(); in.transferTo(0, in.size(), out); } }