MAC leopard: JFileChooser not using FileFiler correctly!?

Question

Hi guys,
I am using FileFilter to filter files with extension ".fpp" in my JFileChooser.This works well in Windows.But in MAC , it shows the "application" files.
I mean there are some files with ".app" extension and they are shown in JFileChooser.So what i did was, using texteditor ; created an empty text file and rename its extension into ".app" ,but then this file did not get displayed in JFileChooser! So seems ,since MAC does not recognise file by its extension ,but by content its showing these "application" files.But I am wondering why it shows this "application" files !! ?
Is there a way to hide these "application" files in JFileChooser ?
Regards

Answer 1

Can't you write your own FileFilter(s) that specifically don't display a directory if it ends in ".app"?
import java.io.File;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
public class JFileChooserTest {
     public static void main(String[] args) {
          JFileChooser chooser = new JFileChooser();
          chooser.setFileFilter(new FileFilter() {
               public boolean accept(File f) {
                    if (f.isDirectory()) {
                         if (f.getName().endsWith(".app")) {
                         //if (f.getName().toLowerCase().startsWith("d")) {
                              return false;
                         return true;
                    // Replace this with whatever logic is appropriate.
                    return f.getName().toLowerCase().endsWith(".exe");
               public String getDescription() {
                    return "Executable files (*.exe)";
          chooser.showOpenDialog(null);
}