Java tutorial
//package com.java2s; /* Copyright (C) 2006 Christian Schneider * * This file is part of Nomad. * * Nomad 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 2 of the License, or * (at your option) any later version. * * Nomad 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 Nomad; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ import java.awt.Component; import java.awt.Container; import java.util.Collection; public class Main { public static <T extends Component> void addChildren(Class<T> clazz, Collection<? super T> dst, Container parent) { for (Component c : parent.getComponents()) { if (clazz.isInstance(c)) dst.add(clazz.cast(c)); } } }