ButtonApp.java

package ro.virtualcampus.gui;

import javax.swing.*;

public class ButtonApp extends JFrame {

    private static final long serialVersionUID = 1L;

    public ButtonApp() {
        super("Button");
    }

    public static void main(String args[]) {
        ButtonApp app = new ButtonApp();
        ButtonPanel bp = new ButtonPanel();
        app.add(bp);
        app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        app.pack();
        app.setVisible(true);
    }
    
}