Exemples Java Swing

Swing par la pratique
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contrat Creative Commons Paternité-Pas d'Utilisation
Commerciale-Partage des Conditions Initiales à l'Identique 2.0
France License
1
Le minimum
 import java.awt.*;
 import javax.swing.*;
 public class Test {

public static void main(String args[]) {

JFrame f = new JFrame();

f.setTitle("Fi2");

f.setPreferredSize(new Dimension(400,400));

f.pack();

f.setVisible(true);

}
 }
2
Une classe séparée

import java.awt.*;

import javax.swing.*;

public class Test {

public static void main(String args[]) {

Simple f = new Simple();

f.setTitle("Fi2");

f.setPreferredSize(new Dimension(400,400));

f.pack();

f.setVisible(true);

}

}

public class Simple extends JFrame { }
3
Un arbre pour Simple
public class Simple extends JFrame {
JPanel jPanelHaut;
JPanel jPanelBas;
public Simple() {
getContentPane().setLayout(new BorderLayout());
jPanelHaut = new JPanel();
jPanelHaut.setPreferredSize(new Dimension(400, 100));
jPanelHaut.setBorder(BorderFactory.createLineBorder(Color.GREEN, 3));
getContentPane().add(jPanelHaut, BorderLayout.NORTH);
}
jPanelBas = new JPanel();
jPanelBas.setPreferredSize(new Dimension(400, 200));
jPanelBas.setBorder(BorderFactory.createLineBorder(Color.RED, 3));
getContentPane().add(jPanelBas, BorderLayout.SOUTH);
}
4
public class Simple extends JFrame {
JLabel texteDuHaut, texteDuBas;
JPanel jPanelHaut;
JPanel jPanelBas;
public Simple() {
getContentPane().setLayout(new BorderLayout());
jPanelHaut = new JPanel();
jPanelHaut.setPreferredSize(new Dimension(400, 100));
jPanelHaut.setBorder(BorderFactory.createLineBorder(Color.GREEN, 3));
getContentPane().add(jPanelHaut, BorderLayout.NORTH);
jPanelBas = new JPanel();
jPanelBas.setPreferredSize(new Dimension(400, 200));
jPanelBas.setBorder(BorderFactory.createLineBorder(Color.RED, 3));
getContentPane().add(jPanelBas, BorderLayout.SOUTH);
texteDuHaut = new JLabel("l'IHM en Fi1...");
jPanelHaut.add(texteDuHaut);
texteDuBas = new JLabel("...et aprés en Fi2");
jPanelBas.add(texteDuBas);
5
public class Simple extends JFrame {
public Simple() {
getContentPane().setLayout(new BorderLayout());
/*
*
*/
JPanel jPanelHaut = new JPanel();
jPanelHaut.setPreferredSize(new Dimension(400, 100));
jPanelHaut.setBorder(BorderFactory.createLineBorder(Color.GREEN, 3));
jPanelHaut.setLayout(new FlowLayout(FlowLayout.CENTER, 10, 10));
getContentPane().add(jPanelHaut, BorderLayout.NORTH);
JLabel texteDuHaut = new JLabel("l'IHM en Fi1...");
jPanelHaut.add(texteDuHaut);
JButton boutonDuHaut = new JButton("Bouton Fi1");
jPanelHaut.add(boutonDuHaut);
/*
*
*/
JPanel jPanelBas = new JPanel();
jPanelBas.setPreferredSize(new Dimension(400, 200));
jPanelBas.setBorder(BorderFactory.createLineBorder(Color.RED, 3));
jPanelBas.setLayout(new FlowLayout(FlowLayout.CENTER, 10, 10));
getContentPane().add(jPanelBas, BorderLayout.SOUTH);
JLabel texteDuBas = new JLabel("...et aprés en Fi2");
jPanelBas.add(texteDuBas);
JButton boutonDuBas = new JButton("Bouton Fi2");
jPanelBas.add(boutonDuBas);
6
7
public class Simple extends JFrame {
public Simple() {
...
JButton boutonDuHaut = new JButton("Bouton Fi1");
jPanelHaut.add(boutonDuHaut);
boutonDuHaut.addActionListener(new ReponseBouton(texteDuHaut));
....
JButton boutonDuBas = new JButton("Bouton Fi2");
jPanelBas.add(boutonDuBas);
boutonDuBas.addActionListener(new ReponseBouton(texteDuBas));
}
public class ReponseBouton implements ActionListener
{
JLabel jbl;
ReponseBouton(JLabel par) { jbl=par; }
}
public void actionPerformed(ActionEvent ae){
if (jbl != null) jbl.setText("nouveau "+ae.getWhen());
}
}
8
public class Simple extends JFrame {
JLabel texteDuBas,texteDuHaut;
JButton boutonDuBas,boutonDuHaut;
public Simple() {
/.../
texteDuHaut = new JLabel("l'IHM en Fi1...");
jPanelHaut.add(texteDuHaut);
boutonDuHaut = new JButton("Bouton Fi1");
jPanelHaut.add(boutonDuHaut);
boutonDuHaut.addActionListener(new ReponseBouton());
/.../
texteDuBas = new JLabel("...et aprés en Fi2");
jPanelBas.add(texteDuBas);
boutonDuBas = new JButton("Bouton Fi2");
jPanelBas.add(boutonDuBas);
boutonDuBas.addActionListener(new ReponseBouton());
}
public class ReponseBouton implements ActionListener
{
public void actionPerformed(ActionEvent ae){
}
}
if (ae.getSource().equals(boutonDuBas))
texteDuBas.setText("nouveau bas : "+ae.getWhen());
else if (ae.getSource().equals(boutonDuHaut))
texteDuHaut.setText("nouveau haut : "+ae.getWhen());
9
/.../
JButton boutonDuBas = new JButton("Bouton Fi2");
jPanelBas.add(boutonDuBas);
boutonDuBas.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
texteDuBas.setText("nouveau bas : "+e.getWhen());
}
}
);
/.../
10
TP de rappel
11
CODE POUR COPIER/COLLER DANS UN FICHIER JAVA
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Simple extends JFrame {
// on sort ces deux references du contructeur pour en faire des donnees membres de la classe
// car la classe interne (qui y a acces !) ReponseBouton en a besoin
JLabel texteDuHaut;
JButton boutonDuHaut;
public Simple() {
getContentPane().setLayout(new BorderLayout());
JPanel jPanelHaut = new JPanel();
jPanelHaut.setPreferredSize(new Dimension(400, 100));
jPanelHaut.setBorder(BorderFactory.createLineBorder(Color.GREEN, 3));
jPanelHaut.setLayout(new FlowLayout(FlowLayout.CENTER, 10, 10));
getContentPane().add(jPanelHaut, BorderLayout.NORTH);
texteDuHaut = new JLabel("l'IHM en Fi1...");
jPanelHaut.add(texteDuHaut);
boutonDuHaut = new JButton("Bouton Fi1");
jPanelHaut.add(boutonDuHaut);
boutonDuHaut.addActionListener(new ReponseBouton());
JPanel jPanelBas = new JPanel();
jPanelBas.setPreferredSize(new Dimension(400, 200));
jPanelBas.setBorder(BorderFactory.createLineBorder(Color.RED, 3));
jPanelBas.setLayout(new FlowLayout(FlowLayout.CENTER, 10, 10));
getContentPane().add(jPanelBas, BorderLayout.SOUTH);
Jlabel texteDuBas = new JLabel("...et aprés en Fi2");
jPanelBas.add(texteDuBas);
}
Jbutton boutonDuBas = new JButton("Bouton Fi2");
jPanelBas.add(boutonDuBas);
boutonDuBas.addActionListener(new ActionListener() {
// écriture compacte de la classe interne ReponseBouton (sous forme de classe anonyme) mais pour le bouton Bas
public void actionPerformed(ActionEvent e) {
texteDuBas.setText("nouveau bas : "+e.getWhen());
}
}
);
// classe interne pour la gestion d'évènement sur le bouton Haut
public class ReponseBouton implements ActionListener
{
public void actionPerformed(ActionEvent ae){
if (ae.getSource().equals(boutonDuHaut)) texteDuHaut.setText("nouveau haut : "+ae.getWhen());
}
}
}
12