NIO的应用，复制大文件，超爽，简单高效

import java.io.RandomAccessFile;import java.nio.MappedByteBuffer;import java.nio.channels.FileChannel;import java.nio.channels.FileChannel.MapMode;public class Demo05 {public static void main(String[] args) throws Exception {    FileChannel inChannel=new RandomAccessFile("f:\\01.wmv", "r").getChannel();    FileChannel outChannel=new RandomAccessFile("f:\\02.wmv", "rw").getChannel();        MappedByteBuffer map=inChannel.map(MapMode.READ_ONLY, 0, inChannel.size());        outChannel.write(map);    outChannel.close();    inChannel.close();    System.out.println("复制完毕");}}