Java tutorial
//package com.java2s; /* * Copyright (C) 2010, 2011, 2012 by Arne Kesting, Martin Treiber, Ralph Germ, Martin Budden * <movsim.org@gmail.com> * ----------------------------------------------------------------------------------------- * * This file is part of * * MovSim - the multi-model open-source vehicular-traffic simulator. * * MovSim 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. * * MovSim 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 MovSim. If not, see <http://www.gnu.org/licenses/> * or <http://www.movsim.org>. * * ----------------------------------------------------------------------------------------- */ import java.awt.Component; import javax.swing.JFrame; public class Main { public static JFrame getJFrame(Component c) { Component ret = c; while (ret != null && !(ret instanceof JFrame)) { ret = ret.getParent(); } return (JFrame) ret; } }