import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Radio extends JPanel implements ActionListener { public Radio() { super(); JRadioButton cyan = new JRadioButton("Cyan"); JRadioButton magenta = new JRadioButton("Magenta"); JRadioButton jaune = new JRadioButton("Jaune"); this.add(cyan); this.add(magenta); this.add(jaune); cyan.addActionListener(this); magenta.addActionListener(this); jaune.addActionListener(this); } public void actionPerformed(ActionEvent evenement) { String test; test = evenement.getActionCommand(); if(test.equals("Cyan")) { this.setBackground(Color.CYAN); } if(test.equals("Magenta")) { this.setBackground(Color.MAGENTA); } if(test.equals("Jaune")) { this.setBackground(Color.YELLOW); } } }