Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
win.setPreferredSize(d);
win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MainPanel.SCR_HEIGHT = d.height;
MainPanel.SCR_WIDTH = d.width;
MainPanel dp = new MainPanel(win);
win.addKeyListener(dp.mainMenu);
win.addMouseListener(dp);
win.add(dp);
win.pack();