FileDialog mock files

Question

I am implementing an Applet which needs to access to file system and I need to show to user mock/fake files under mypc or userhome.

There is a way to do it using JFileChooser with FileSystemView: This is a short example for Windows OS:

JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSystemView(new FileSystemView() {
    @Override
    public File createNewFolder(File containingDir) throws IOException {
        //do something, not important here
        return null;
    }
    @Override
    public File[] getFiles(File dir, boolean useFileHiding) {
        File[] files = super.getFiles(dir, useFileHiding);
        // my pc -> desktop -> null
        if (dir.getParentFile() == null
         || dir.getParentFile().getParentFile() != null) { 
            return files;
        }
        List<File> newFiles = new ArrayList(Arrays.asList(files));
        newFiles.add(new File("Custom_File_1"));
        newFiles.add(new File("Custom_File_2"));
        return newFiles.toArray(new File[newFiles.size()]);
    }
});

But the issue is that JFileChooser does not work properly on Mac OS. There is no ability to navigate into any subdirectory, move up from the current directory. Here is a similar problem: JFileChooser for directories on the Mac: how to make it not suck? (I switched off DIRECTORIES_ONLY mode, but it did not help)

Now I am trying to use FileDialog, but there is another problem: I can not find a way to show mock/fake files under mypc or userhome (like FileSystemView).

The question is: Is there an ability to fix JFileChooser in MAC OS? Or add mock/fake files into specific directory using FileDialog?