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 * @key headful
37 * @bug 8009919
38 * @author Sergey Bylokhov
39 * @library ../../../../lib/testlibrary/
40 * @build ExtendedRobot
41 * @run main JButtonPaintNPE
42 */
43public final class JButtonPaintNPE {
44
45    private static JFrame frame;
46
47    public static void main(final String[] args)
48            throws InvocationTargetException, InterruptedException {
49        SwingUtilities.invokeAndWait(() -> {
50            frame = new JFrame();
51            frame.add(new JButton() {
52                @Override
53                protected void paintComponent(final Graphics g) {
54                    Graphics gg = new BufferedImage(getWidth(), getHeight(),
55                                  BufferedImage.TYPE_INT_ARGB).createGraphics();
56                    super.paintComponent(gg);
57                    gg.dispose();
58                }
59            });
60            frame.setSize(300, 300);
61            frame.setLocationRelativeTo(null);
62            frame.setVisible(true);
63        });
64        sleep();
65        SwingUtilities.invokeAndWait(() -> {
66            if (frame != null) {
67                frame.dispose();
68            }
69        });
70    }
71
72    private static void sleep() {
73        try {
74             ExtendedRobot robot = new ExtendedRobot();
75             robot.waitForIdle(1000);
76         }catch(Exception ex) {
77             ex.printStackTrace();
78             throw new Error("Unexpected Failure");
79         }
80    }
81}
82