45 lines
1.2 KiB
Java
45 lines
1.2 KiB
Java
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import java.awt.*;
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import javax.swing.*;
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import java.awt.event.*;
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class Observer implements ActionListener {
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public Observer() {}
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public void actionPerformed(ActionEvent evt) {
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String input = evt.getActionCommand().toLowerCase().trim();
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JTextField textField = (JTextField)evt.getSource();
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JPanel panel = (JPanel)textField.getParent();
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if (input.equals("cyan")) panel.setBackground(Color.CYAN);
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else if (input.equals("jaune")) panel.setBackground(Color.YELLOW);
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else if (input.equals("magenta")) panel.setBackground(Color.MAGENTA);
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textField.setText("");
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}
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}
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public class Commande {
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public static void main(String[] args) {
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JFrame f = new JFrame("Fond");
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f.setSize(200, 200);
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f.setLocation(100, 100);
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f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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Observer observer = new Observer();
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JTextField t = new JTextField();
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t.setLocation(0, 0);
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t.setSize(200, 20);
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t.addActionListener(observer);
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JPanel p = new JPanel();
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p.setSize(200, 200);
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p.setLocation(0, 0);
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p.setLayout(null);
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f.add(p);
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p.add(t);
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f.setVisible(true);
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}
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}
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