Here you can find the source of addMenuItems(JPopupMenu menu, JComponent... items)
public static void addMenuItems(JPopupMenu menu, JComponent... items)
//package com.java2s; /*/*from w ww . j av a 2 s . c o m*/ * "BSLib", Brainstorm Library. * Copyright (C) 2017 by Sergey V. Zhdanovskih. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import javax.swing.*; public class Main { public static void addMenuItems(JPopupMenu menu, JComponent... items) { for (JComponent item : items) { if (item == null) { menu.addSeparator(); } else { menu.add(item); } } } public static void addMenuItems(JMenu menu, JComponent... items) { for (JComponent item : items) { menu.add(item); } } public static void addMenuItems(JMenuBar menu, JComponent... items) { for (JComponent item : items) { menu.add(item); } } }