/* * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* @test @bug 4420658 @summary No ClassCastException should be thrown when getComponent() is called on an event with a non-Component source. The result should be null. @key headful @run main ObjectSourceTest */ import java.awt.Component; import java.awt.Frame; import java.awt.event.ComponentEvent; public class ObjectSourceTest { static Frame frame; public static void main(String[] args) { frame = new Frame("ObjectSourceTest"); ComponentEvent ce = new ComponentEvent(frame, ComponentEvent.COMPONENT_SHOWN); Object obj = new Object(); ce.setSource(obj); Component comp = ce.getComponent(); if (comp != null) { throw new RuntimeException("ObjectSourceTest failed. comp != null"); } if (frame != null) { frame.dispose(); } } }