import javax.swing.*;
import java.awt.*;

public class Boutons {
	public static void main(String[] args) {
		JFrame fenetre = new JFrame();
		JPanel pan = new JPanel();
		fenetre.setSize(400, 200);
    	fenetre.setLocation(0, 0);
    	fenetre.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		JButton bouton1 = new JButton();
		JButton bouton2 = new JButton();
		JButton bouton3 = new JButton();
		JButton bouton4 = new JButton();
		JButton bouton5 = new JButton();
		pan.add(bouton1);
		pan.add(bouton2);
		pan.add(bouton3);
		pan.add(bouton4);
		pan.add(bouton5);
		fenetre.setContentPane(pan);
		fenetre.setVisible(true);
	}
}