import java.awt.EventQueue; import javax.swing.JFrame; public class Pacman extends JFrame { public Pacman() { initUI(); } private void initUI() { add(new Board()); setTitle("Pacman"); setDefaultCloseOperation(EXIT_ON_CLOSE); setSize(380, 420); setLocationRelativeTo(null); setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Pacman ex = new Pacman(); ex.setVisible(true); } }); } }