use nio to fast copy file

nio file copy

public static void fileCopy( File in, File out )

   
throws IOException   
{   


FileChannel inChannel = new 

FileInputStream( in ).getChannel();   


FileChannel outChannel = new 

FileOutputStream( out ).getChannel();   


try  


{   


//          inChannel.transferTo

(0, inChannel.size(), outChannel);      // original 


-- apparently has trouble copying large files on Windows   

// magic 

number for Windows, 64Mb - 32Kb)   


int maxCount 

= (64 * 1024 * 1024) - (32 * 1024);   


long size = 

inChannel.size();   


long 

position = 0;   


while ( 

position < size )   


{   


&

nbsp; position += inChannel.transferTo( position, maxCount, outChannel );  



}

   
}   


finally  


{   


if ( 

inChannel != null )   


{   


&

nbsp; inChannel.close();   


}

   
if ( outChannel != null )   


{   


&

nbsp;  outChannel.close();   


}

   
}   


}  


public static void fileCopy( File in, File out )


throws 

IOException
{
FileChannel inChannel = new FileInputStream( in ).getChannel

();
FileChannel outChannel = new 

FileOutputStream( out ).getChannel();
try
{
//          inChannel.transferTo

(0, inChannel.size(), outChannel);      // original 

-- apparently has trouble copying large files on Windows

// magic 

number for Windows, 64Mb - 32Kb)


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

();
}


}
}