Simple Swing

[abalfazl hossein]

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class SwingButton extends JApplet {

  public void init() {

    // Swing adds JComponents to the containers
    // contentPane rather than directly to the panel
    // as with the AWT.
    Container contentPane = getContentPane();

    // Create an instance of JButton
    // Pass the image file as an ImageIcon object
    JButton button = new JButton("A Button");

    // Add the button to the contentPane.
    contentPane.add(button);
     setVisible(true);
  }
}

This code does not show any thing, Why?

[Ernest Friedman-Hill]

Depends what you did with it. Did you create an appropriate HTML file naming this class in an applet tag, and open the HTML in a browser or the appletviewer application?

[Jesper de Jong]

That's a Swing applet. How are you running that code, is it packaged properly, do you have a HTML web page with an applet tag, etc.? See Oracle's applet tutorial.

You should build the GUI in the Swing event dispatch thread, for example using SwingUtilities.invokeAndWait, as shown in this example.

Also, you do not need to call setVisible(true) for an applet.