Simple dialog in an applet

Question

what is the easiest way to make a popup window in a java applet? (1.1 compat)
I haven't done Java for like 5 years so be gentle! :-)
Thanks

Answer 1

JDialog is fairly simple to use.
Here's a simple example of one I used as an about-dialog. As you can see, the imports take nearly as many lines as the code...
import javax.swing.JDialog;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JButton;
import java.awt.Frame;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.Point;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class AboutDialog extends JDialog implements ActionListener
    public AboutDialog(Frame parent)
        super(parent, "AboutDialog...", true);
        setSize(450,350);
        Point p = parent.getLocationOnScreen();
        setLocation(p.x+50, p.y+50);
        Container pane = getContentPane();
        pane.setLayout(new BorderLayout());
        JPanel jps = new JPanel();
        JButton okButton = new JButton("Ok");
        okButton.addActionListener(this);
        jps.add(okButton);
        String about = "Write anything you want here";       
        pane.add(jps, "South");
        JTextArea ta = new JTextArea(about);
        ta.setFont(new Font("Courier", Font.PLAIN, 12));
        pane.add(new JScrollPane(ta), "Center");
    public void actionPerformed(ActionEvent e)
        setVisible(false);
}The most useful feature of Dialogs is modality. A modal dialog is always the focus (at least within java, you can focus other windows). So you must finish whatever the dialog wants before going back to java frames.
I made this one modal, you can't do anything until you close it, or click the ok button.
HTH,
Radish21