code: protected void setFileFilter()
     {
        m_fileChooser.setAcceptAllFileFilterUsed(false);
        String[] extensions = m_model.getExtensions();
        for (int extensionIndex = 0; extensionIndex < extensions.length; extensionIndex += 2)
        {
           m_fileChooser.setFileFilter(new FileNameExtensionFilter(extensions[extensionIndex].toUpperCase() + " File", extensions[extensionIndex + 1]));
        }
     }
docs: Update the file chooser's filter settings.