public class DocFilter extends FileFilter { public boolean accept(File f) { if (f.isDirectory()) { return true; }

    String extension = Utils.getExtension(f);
    if (extension != null) {
        if (extension.equals(Utils.doc) ||
            extension.equals(Utils.docx) )
        {
            return true;
        } else {
            return false;
        }
    }
    return false;
}

//The description of this filter
public String getDescription() { return "Just Document Files"; }

}

Netbeans compiler warned with the error, "No interface expected here" for above code

Anyone has idea what was the problem?? I tried changing the 'extends' to 'implements', however, it didn't seem to work that way.

and when I changed to implements, the following code cannot work,

chooser.addChoosableFileFilter(new DocFilter());

and with this error,

"method addChoosableFileFilter in class javax.swing.JFileChooser cannot be applied to given types required: javax.swing.filechooser.FileFilter"

Can anyone help on this? Thanks..