GridLayout-window with buttons

import java.awt.*;

public class GridLayout extends Frame {
    private boolean inAnApplet = true;

    public GridLayout() {
        setLayout(new GridLayout(0,2));
        setFont(new Font("Aril", Font.PLAIN, 14));
   
        add(new Button("Btn-1"));
        add(new Button("Btn-2"));
        add(new Button("Btn-3"));
        add(new Button("Btn-4"));
        add(new Button("Btn-5"));
    }

    public boolean handleEvent(Event e) {
        if (e.id == Event.WINDOW_DESTROY) {
            if (inAnApplet) {
                dispose();
                return true;
            } else {
                System.exit(0);
            }
        } 
        return super.handleEvent(e);
    }

    public static void main(String args[]) {
        GridLayout window = new GridLayout();
        window.inAnApplet = false;

        window.setTitle("GridLayout Example");
        window.pack();
        window.show();
    }
}