Java tutorial
//package com.java2s; /* * Copyright (C) 2013 nohana, Inc. All rights reserved. * * 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.IOException; import java.nio.ByteBuffer; import java.nio.channels.ReadableByteChannel; import java.nio.channels.WritableByteChannel; public class Main { private static final int CAPACITY = 16 * 1024; public static void copy(ReadableByteChannel src, WritableByteChannel dest) throws IOException { ByteBuffer buffer = ByteBuffer.allocateDirect(CAPACITY); while (src.read(buffer) != -1) { buffer.flip(); dest.write(buffer); buffer.compact(); } buffer.flip(); while (buffer.hasRemaining()) { dest.write(buffer); } } }