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