import java.awt.EventQueue; import javax.swing.JFrame; public class Snake extends JFrame { public Snake() { add(new Board()); setTitle("Snake"); pack(); setResizable(false); setLocationRelativeTo(null); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { JFrame ex = new Snake(); ex.setVisible(true); } }); } }