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| 6. 28. 7. 一个简单的Swing为基础的程序 |
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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/*
This HTML can be used to launch the applet:
<object code="MyApplet" width=240 height=100>
</object>
*/
public class MyApplet extends JApplet {
JButton jbtnOne;
JButton jbtnTwo;
JLabel jlab;
public void init() {
try {
SwingUtilities.invokeAndWait(new Runnable () {
public void run() {
guiInit(); // initialize the GUI
}
});
} catch(Exception exc) {
System.out.println("Can't create because of "+ exc);
}
}
// Called second, after init(). Also called
// whenever the applet is restarted.
public void start() {
// Not used by this applet.
}
// Called when the applet is stopped.
public void stop() {
// Not used by this applet.
}
// Called when applet is terminated. This is
// the last method executed.
public void destroy() {
// Not used by this applet.
}
// Setup and initialize the GUI.
private void guiInit() {
// Set the applet to use flow layout.
setLayout(new FlowLayout());
// Create two buttons and a label.
jbtnOne = new JButton("One");
jbtnTwo = new JButton("Two");
jlab = new JLabel("Press a button.");
// Add action listeners for the buttons.
jbtnOne.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent le) {
jlab.setText("Button One pressed.");
}
});
jbtnTwo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent le) {
jlab.setText("Button Two pressed.");
}
});
// Add the components to the applet's content pane.
getContentPane().add(jbtnOne);
getContentPane().add(jbtnTwo);
getContentPane().add(jlab);
}
}
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