Java tutorial
//package com.java2s; /* Alloy Analyzer 4 -- Copyright (c) 2006-2009, Felix Chang * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import java.awt.Component; import javax.swing.JMenu; import javax.swing.JMenuItem; public class Main { /** Convenience method that recursively enables every JMenu and JMenuItem inside "menu". * @param menu - the menu to start the recursive search */ public static void enableAll(JMenu menu) { for (int i = 0; i < menu.getMenuComponentCount(); i++) { Component x = menu.getMenuComponent(i); if (x instanceof JMenuItem) ((JMenuItem) x).setEnabled(true); else if (x instanceof JMenu) enableAll((JMenu) x); } } }