Java

public class Main extends SimpleApplication {
 public static void main(String[] args) {
        Main app = new Main();
        app.start();
    }

    public void simpleInitApp() {
// Jakiś kod
    }

private ActionListener actionListener = new ActionListener() {
        public void onAction(String name, boolean isPressed, float tpf) {
    // jakiś kod
            }
        };
}