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 import java.awt.*; 24 import javax.swing.*; 25 import java.awt.event.*; 26 27 /** 28 * @test 29 * @bug 7161568 30 * @author Alexander Scherbatiy 31 * @summary Tests that navigating tabs in the JTAbbedPane does not throw NPE 32 * @run main bug7161568 33 */ 34 public class bug7161568 { 35 36 private static final int N = 50; 37 private static JTabbedPane tabbedPane; 38 39 public static void main(String[] args) throws Exception { 40 UIManager.put("TabbedPane.selectionFollowsFocus", Boolean.FALSE); 41 42 Robot robot = new Robot(); 43 robot.setAutoDelay(50); 44 45 SwingUtilities.invokeAndWait(new Runnable() { 46 47 @Override 48 public void run() { 49 createAndShowUI(); 50 } 51 }); 52 53 robot.waitForIdle(); 54 55 SwingUtilities.invokeAndWait(new Runnable() { 56 57 @Override 58 public void run() { 59 tabbedPane.requestFocus(); 60 } 61 }); 62 63 robot.waitForIdle(); 64 65 for (int i = 0; i < N; i++) { 66 robot.keyPress(KeyEvent.VK_LEFT); 67 robot.keyRelease(KeyEvent.VK_LEFT); 68 robot.waitForIdle(); 69 } 70 } 71 72 static void createAndShowUI() { 73 JFrame frame = new JFrame("Test"); 74 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 75 frame.setSize(100, 100); 76 77 tabbedPane = new JTabbedPane(); 78 79 for (int i = 0; i < N; i++) { 80 tabbedPane.addTab("Tab: " + i, new JLabel("Test")); 81 } 82 83 tabbedPane.setSelectedIndex(0); 84 85 frame.getContentPane().add(tabbedPane); 86 frame.setVisible(true); 87 } 88 }