private void addBag(Component comp, GridBagLayout gridbag, GridBagConstraints c) {
private void addBag(JComponent comp, GridBagLayout gridbag, GridBagConstraints c) {
    private void addBag(Component comp, GridBagLayout gridbag, GridBagConstraints c) {        gridbag.setConstraints(comp, c);        add(comp);    }