Java APIs

I don't see what I'm doing wrong here as I've read threads on here as well as on the NetBeans site, but when I generate a javadoc for my project, the only method that seems to be in my documentation is main. In that particular class I have 3 other methods.

For example:

    /**
     * @param ext file extention allowed to be selected
     * @param desc description of the file type
     * @param fc which type of JFileChooser
     */
    private void useFileFilter(String ext, String desc, JFileChooser fc)
    {
        filter.setAcceptedFiles(ext, desc);
        fc.setAcceptAllFileFilterUsed(false);
        fc.setFileFilter(filter);
    }

Is there additional script configuration I need to do before this works properly or am I safe to assume that without additional arguments javadoc will not include private methods? I'm using NetBeans 6.0.1.