JFileChooser in Applet

Question

Hi all,
I'm having a hard time using JFileChooser in Applet. I was trying implemented custom Filefilter so that the certain files to show up on the chooser dialog, but when I add the line, addChoosableFileFilter() method, the applet didn't come out. The applet initialized Ok, and the message "applet started" appeared on the browser, but the file-choosing dialog never comes out. I checked the Java console, but there's no useful message on it. Even, I expected some error message on it. Then, it seems be hopeless to find the errors on this applet since virtually I got no errors!?
Does anybody have good explanations why the chooser dialog didn't come out on the applet window? Here is a piece of code for JFileChooer and the FileFilter:
/* FileChooser */
public class UploaderApplet extends JApplet
public void init() {
try {
final JFileChooser chooser = new JFileChooser();
//when I add this line below, the filechooser didn't come out
chooser.addChoosableFileFilter(new FormCDNFilter());
Container contentPane = getContentPane();
contentPane.add(chooser, BorderLayout.CENTER);
chooser.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
String cmd = event.getActionCommand();
if (cmd.equals(JFileChooser.APPROVE_SELECTION)) {
File file = chooser.getSelectedFile();
.....do something with chosen file here
/* FileFilter */
public class FormCDNFilter extends FileFilter {
public boolean accept(File f) {
if (f.isDirectory()) {
return true;
String extension = Utils.getExtension(f);
if (extension != null) {
if (extension.equals(Utils.fae) ||
extension.equals(Utils.ovd) ||
extension.equals(Utils.pmd) ||
extension.equals(Utils.psf)) {
return true;
} else {
return false;
return false;
}

Answer 1

Sorry, but you can't use a JFileChooser in an applet by security reasons. You probably get a security exception in the java console. I'm still looking a way to open text files for the server. If you have an ideia, please let me know.