2. Introduction à JFC/SWING

Il existe 2 solutions pour faire des applets Swing qui marchent avec un browser standard

1. Utiliser les classes Swing 1.1 avec Java 1.1x
• dans ce cas il faut soit copier l'archive swing.jar dans le répertoire java de votre browser, soit inclure l'archive dans l'applet (solution lourde en temps de chargement)
• Attention: Swing 1x ne contient pas tout (Java 2D, Java3D, etc.)
2. Utiliser le Java Plugin de Sun qui permet de faire tourner la Java 2 plateforme (Java 1.2 / 1.3) qui contient Swing 2.
3. http://java.sun.com/products/plugin/ (Java plug-in page)
4. http://java.sun.com/products/plugin/1.3/docs/tags.html (HTML specification)

Exemple 2-1: Une simple SwingApplication (Sun Java Tutorial)

• Voir http://tecfa.unige.ch/guides/java/staf2x/ex/swing/simple/SwingApplication.java
• Tutoriel: http://tecfa.unige.ch/guides/java/tutorial/uiswing/start/swingTour.html

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class SwingApplication {

    private static String labelPrefix = "Number of button clicks: ";

    private int numClicks = 0;

    public Component createComponents() {

	// Define a label widget

     final JLabel label = new JLabel(labelPrefix + "0    ");

	// Define a press button widget

     JButton button = new JButton("I'm a Swing button!");

	// ALT-i will trigger it also

     button.setMnemonic('i');

     // add an actionPerformed method to the buttons Action Listener.

	button.addActionListener(new ActionListener() {

		// each time the user clicks, the text of the Label gets changed

		public void actionPerformed(ActionEvent e) {

		    numClicks++;

		    label.setText(labelPrefix + numClicks);

		}

	    });

        label.setLabelFor(button);

	// We need a container (panel) to put the label and the button

     JPanel pane = new JPanel();

	// A Border Factory will create an Empty Border we will use

	pane.setBorder(BorderFactory.createEmptyBorder(30, 30, 10, 30));

	// We use a simple grid layout

     pane.setLayout(new GridLayout(0, 1));

     pane.add(button);

     pane.add(label);

     return pane;

    }

public static void main(String[] args) {

     //Create the top-level container and add contents to it.

     JFrame frame = new JFrame("SwingApplication");

     SwingApplication app = new SwingApplication();

	// The createComponents method will produce the pane with the 2 widgets

	// We then can add it to the contents of our frame

     Component contents = app.createComponents();

     frame.getContentPane().add(contents, BorderLayout.CENTER);

     //Finish setting up the frame, and show it.

     frame.addWindowListener(new WindowAdapter() {

		public void windowClosing(WindowEvent e) {

		    System.exit(0);

		}

	    });

     frame.pack();

     frame.setVisible(true);

    }

}

public class SwingApplication {

                      ...

        public static void main(String[] args) {

                          ...

       JFrame frame = new JFrame("SwingApplication");

       //..create the components to go into the frame...

       //...stick them in a container (the content pane of the frame)

      frame.getContentPane().add(contents, BorderLayout.CENTER);

       // Finish setting up the frame (make sure people can close it), and show it.

      frame.addWindowListener(new WindowAdapter() {

               public void windowClosing(WindowEvent e) {

                     System.exit(0);

                              }

                     });

               frame.pack();

               frame.setVisible(true);

         }       }

        final JLabel label = new JLabel(" ......   ");

        JButton button = new JButton("I'm a Swing button!");

        button.setMnemonic('i');