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| import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
class MaFenetre extends JFrame implements ActionListener {
public static void main(String args[]) {
MaFenetre f = new MaFenetre();
}
private Panneau pan;
private JButton ovale, rectangle;
public MaFenetre() {
setTitle("Titre de ma fenêtre");
setBounds(150, 150, 600, 600);
setVisible(true);
Container page = getContentPane();
page.setLayout(new BorderLayout());
pan = new Panneau();
pan.setBackground(Color.green);
page.add(pan, "Center");
rectangle = new JButton("Rectangle");
page.add(rectangle, "North");
rectangle.addActionListener(this);
ovale = new JButton("Ovale");
page.add(ovale, "South");
ovale.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == ovale)
pan.dessinOvale();
if (e.getSource() == rectangle)
pan.dessinRectangle();
pan.repaint();
}
}
class Panneau extends JPanel {
public boolean rectangle = false, ovale = false;
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (ovale)
g.drawOval(80, 20, 120, 60);
if (rectangle)
g.drawRect(80, 20, 120, 60);
}
public void dessinOvale() {
rectangle = false;
ovale = true;
}
public void dessinRectangle() {
rectangle = true;
ovale = false;
}
} |
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