private void enableTabPages() {
        // Disables all tabs except the first (the common for all Net Objects)
        for (int i = jTabbedPane1.getTabCount() - 1; i > 0; i--) {
            // Enables specific Net Object tab
            if (i != currentTabIndex) {
                this.jTabbedPane1.remove(i);
            }
        }
    }