Java中如何使用NIO快速的进行文件复制呢？

实现思路:
    生成FileChannel对象，然后即可实现NIO快速复制文件

 public static void fileCopy( File in, File out ) 
      throws IOException 
  { 
    FileChannel inChannel = new FileInputStream( in ).getChannel(); 
    FileChannel outChannel = new FileOutputStream( out ).getChannel(); 
    try
    {  
      int maxCount = (64 * 1024 * 1024) - (32 * 1024); 
      long size = inChannel.size(); 
      long position = 0; 
      while ( position < size ) 
      { 
        position += inChannel.transferTo( position, maxCount, outChannel ); 
      } 
    } 
    finally
    { 
      if ( inChannel != null ) 
      { 
        inChannel.close(); 
      } 
      if ( outChannel != null ) 
      { 
        outChannel.close(); 
      } 
    } 
  }