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 */ 23import java.awt.*; 24import javax.swing.*; 25import java.awt.event.*; 26 27/** 28 * @test 29 * @key headful 30 * @bug 7161568 31 * @author Alexander Scherbatiy 32 * @summary Tests that navigating tabs in the JTAbbedPane does not throw NPE 33 * @run main bug7161568 34 */ 35public class bug7161568 { 36 37 private static final int N = 50; 38 private static JTabbedPane tabbedPane; 39 40 public static void main(String[] args) throws Exception { 41 UIManager.put("TabbedPane.selectionFollowsFocus", Boolean.FALSE); 42 43 Robot robot = new Robot(); 44 robot.setAutoDelay(50); 45 46 SwingUtilities.invokeAndWait(new Runnable() { 47 48 @Override 49 public void run() { 50 createAndShowUI(); 51 } 52 }); 53 54 robot.waitForIdle(); 55 56 SwingUtilities.invokeAndWait(new Runnable() { 57 58 @Override 59 public void run() { 60 tabbedPane.requestFocus(); 61 } 62 }); 63 64 robot.waitForIdle(); 65 66 for (int i = 0; i < N; i++) { 67 robot.keyPress(KeyEvent.VK_LEFT); 68 robot.keyRelease(KeyEvent.VK_LEFT); 69 robot.waitForIdle(); 70 } 71 } 72 73 static void createAndShowUI() { 74 JFrame frame = new JFrame("Test"); 75 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 76 frame.setSize(100, 100); 77 78 tabbedPane = new JTabbedPane(); 79 80 for (int i = 0; i < N; i++) { 81 tabbedPane.addTab("Tab: " + i, new JLabel("Test")); 82 } 83 84 tabbedPane.setSelectedIndex(0); 85 86 frame.getContentPane().add(tabbedPane); 87 frame.setVisible(true); 88 } 89} 90