JButtonPaintNPE.java revision 11018:66682f651425 
1/*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24
25import java.awt.Graphics;
26import java.awt.Toolkit;
27import java.awt.image.BufferedImage;
28import java.lang.reflect.InvocationTargetException;
29
30import javax.swing.JButton;
31import javax.swing.JFrame;
32import javax.swing.SwingUtilities;
33
34/**
35 * @test
36 * @bug 8009919
37 * @author Sergey Bylokhov
38 * @library ../../../../lib/testlibrary/
39 * @build ExtendedRobot
40 * @run main JButtonPaintNPE
41 */
42public final class JButtonPaintNPE {
43
44    private static JFrame frame;
45
46    public static void main(final String[] args)
47            throws InvocationTargetException, InterruptedException {
48        SwingUtilities.invokeAndWait(() -> {
49            frame = new JFrame();
50            frame.add(new JButton() {
51                @Override
52                protected void paintComponent(final Graphics g) {
53                    Graphics gg = new BufferedImage(getWidth(), getHeight(),
54                                  BufferedImage.TYPE_INT_ARGB).createGraphics();
55                    super.paintComponent(gg);
56                    gg.dispose();
57                }
58            });
59            frame.setSize(300, 300);
60            frame.setLocationRelativeTo(null);
61            frame.setVisible(true);
62        });
63        sleep();
64        SwingUtilities.invokeAndWait(() -> {
65            if (frame != null) {
66                frame.dispose();
67            }
68        });
69    }
70
71    private static void sleep() {
72        try {
73             ExtendedRobot robot = new ExtendedRobot();
74             robot.waitForIdle(1000);
75         }catch(Exception ex) {
76             ex.printStackTrace();
77             throw new Error("Unexpected Failure");
78         }
79    }
80}
81