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9  * This code is distributed in the hope that it will be useful, but WITHOUT
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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).
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23 import java.awt.BorderLayout;
24 import java.awt.Toolkit;
25 import java.awt.Robot;
26 import javax.swing.JFrame;
27 import javax.swing.JLabel;
28 import javax.swing.JTabbedPane;
29 import javax.swing.SwingUtilities;
30 import javax.swing.plaf.metal.MetalLookAndFeel;
31 
32 /**
33  * @test
34  * @key headful
35  * @bug 8017284
36  * @author Alexander Scherbatiy
37  * @summary  Aqua LaF: memory leak when HTML is used for JTabbedPane tab titles
38  * @run main/othervm/timeout=60 -Xmx128m bug8017284
39  */
40 public class bug8017284 {
41 
42     private static final int TAB_COUNT = 100;
43     private static final int ITERATIONS = 100;
44     private static JFrame frame;
45     private static JTabbedPane tabbedPane;
46 
main(String[] args)47     public static void main(String[] args) throws Exception {
48 
49         Robot robot = new Robot();
50         SwingUtilities.invokeAndWait(() -> {
51             frame = new JFrame();
52             frame.setSize(500, 500);
53             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
54 
55             tabbedPane = new JTabbedPane();
56 
57             for (int i = 0; i < TAB_COUNT; i++) {
58                 tabbedPane.add("Header " + i, new JLabel("Content: " + i));
59             }
60 
61             frame.getContentPane().setLayout(new BorderLayout());
62             frame.getContentPane().add(tabbedPane, BorderLayout.CENTER);
63             frame.setVisible(true);
64         });
65 
66         robot.waitForIdle();
67 
68         SwingUtilities.invokeAndWait(() -> {
69             for (int j = 0; j < ITERATIONS; j++) {
70                 for (int i = 0; i < TAB_COUNT; i++) {
71                     tabbedPane.setTitleAt(i, getHtmlText(j * TAB_COUNT + i));
72                 }
73             }
74         });
75         robot.waitForIdle();
76 
77         SwingUtilities.invokeAndWait(() -> frame.dispose());
78     }
79 
getHtmlText(int i)80     private static String getHtmlText(int i) {
81         return "<html><b><i>" + i + "</b></i>";
82     }
83 }
84