IsTraversable making files invisible, rather than non-traversable

Question

I have some files stored in a folder (some kind of "compound" file) so when the user opens the folder it acts like a file. At the moment I am drawing its own little icon and stuff, everything works fine except the user can "double click" on the file and instead of opening it, they will go into it and see all the guts inside. I found the isTraversable method of the FileView object and that does half the job (other half would be to support double - click opening) However, when i try to use it anything I set as non traversable becomes invisible. I suppose its doing its job (I cannot traverse the file that isnt there) but i would like to be able to choose this file.
public Boolean isTraversable(File f)
          Boolean ret = super.isTraversable(f);
          if (QuantitationFileChooser.isQuantitationFile(f, false))
               ret= new Boolean(false);
          return ret;
     }Am i missing the point of this function or something? It seem pretty simple, i have no idea what i am doing wrong! The documentation says its exactly what i want:
"public Boolean isTraversable(File f) Whether the directory is traversable or not. This might be useful, for example, if you want a directory to represent a compound document and don't want the user to descend into it. "
Thanks for any help

Answer 1

794057 wrote:
Am i missing the point of this function or something? It seem pretty simple, i have no idea what i am doing wrong! The documentation says its exactly what i want:
"public Boolean isTraversable(File f) Whether the directory is traversable or not. This might be useful, for example, if you want a directory to represent a compound document and don't want the user to descend into it. "Works as documented for me. Run this code and try double-clicking around.import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.SwingUtilities;
import javax.swing.filechooser.FileView;
public class ChooserWithView {
  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        JFileChooser chooser = new JFileChooser();
        chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
        chooser.setFileView(new FileView() {
          @Override
          public Boolean isTraversable(File f) {
            if (f.getName().contains("o")) {
              return false;
            return null;
        chooser.showOpenDialog(null);
        System.out.println(chooser.getSelectedFile());
}