public static void main(String[] args){
  Frame frame=new PacketTool();
  frame.pack();
  frame.setLocationRelativeTo(null);
  frame.setVisible(true);
}

public static void main ( String [ ] args ) { Frame frame = new PacketTool ( ) ; frame . pack ( ) ; frame . setLocationRelativeTo ( null ) ; frame . setVisible ( true ) ; }
display a window for testing the transmission of boards .
