Java tutorial
//package com.java2s; /* * Distributed as part of c3p0 v.0.9.1.2 * * Copyright (C) 2005 Machinery For Change, Inc. * * Author: Steve Waldman <swaldman@mchange.com> * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version 2.1, as * published by the Free Software Foundation. * * This software 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this software; see the file LICENSE. If not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. */ public class Main { public static ThreadGroup rootThreadGroup() { ThreadGroup tg = Thread.currentThread().getThreadGroup(); ThreadGroup ptg = tg.getParent(); while (ptg != null) { tg = ptg; ptg = tg.getParent(); } return tg; } }