String fromFileName = args[0];
String toFileName = args[1];
FileChannel in = new FileInputStream( fromFileName ).getChannel();
FileChannel out = new FileOutputStream( toFileName ).getChannel();
ByteBuffer buff = ByteBuffer.allocate( 32*1024 );
while ( in.read( buff ) > 0 ) {
buff.flip();
out.write( buff );
buff.clear();
}
in.close();
out.close();
