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 /*
  25  * @test
  26  * @key headful
  27  * @bug 8012004
  28  * @summary JINTERNALFRAME NOT BEING FINALIZED AFTER CLOSING
  29  * @author mcherkas
  30  * @run main InternalFrameIsNotCollectedTest
  31  */
  32 import javax.swing.*;
  33 import java.awt.*;
  34 import java.beans.PropertyVetoException;
  35 import java.util.Date;
  36 
  37 public class InternalFrameIsNotCollectedTest {
  38 
  39     public static final int maxWaitTime = 100000;
  40     public static final int waitTime = 5000;
  41     private static Robot robot;
  42     private static CustomInternalFrame iFrame;
  43 
  44     public static void main(String[] args) throws Exception {
  45         initRobot();
  46         SwingUtilities.invokeAndWait(new Runnable() {
  47             @Override
  48             public void run() {
  49                 initUI();
  50                 try {
  51                     closeInternalFrame();
  52                 } catch (PropertyVetoException e) {
  53                     throw new RuntimeException(e);
  54                 }
  55             }
  56         });
  57         robot.waitForIdle();
  58         invokeGC();
  59         System.runFinalization();
  60         Thread.sleep(1000); // it's better to wait 1 sec now then 10 sec later
  61         Date startWaiting = new Date();
  62         synchronized (CustomInternalFrame.waiter) {
  63             // Sync with finalization thread.
  64             Date now = new Date();
  65             while (now.getTime() - startWaiting.getTime() < maxWaitTime && !CustomInternalFrame.finalized) {
  66                 CustomInternalFrame.waiter.wait(waitTime);
  67                 now = new Date();
  68             }
  69         }
  70         if (!CustomInternalFrame.finalized) {
  71             throw new RuntimeException("Closed internal frame wasn't collected");
  72         }
  73     }
  74 
  75     private static void initRobot() throws AWTException {
  76         robot = new Robot();
  77         robot.setAutoDelay(100);
  78     }
  79 
  80     private static void closeInternalFrame() throws PropertyVetoException {
  81         iFrame.setClosed(true);
  82         iFrame = null;
  83     }
  84 
  85     private static void initUI() {
  86         JFrame frame = new JFrame("Internal Frame Test");
  87         frame.getContentPane().setLayout(new BorderLayout());
  88         JDesktopPane desktopPane = new JDesktopPane();
  89         desktopPane.setDesktopManager(new DefaultDesktopManager());
  90         frame.getContentPane().add(desktopPane, BorderLayout.CENTER);
  91 
  92         iFrame = new CustomInternalFrame("Dummy Frame");
  93 
  94         iFrame.setSize(200, 200);
  95         iFrame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
  96         desktopPane.add(iFrame);
  97 
  98         frame.setSize(800, 600);
  99         frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
 100         frame.setVisible(true);
 101         iFrame.setVisible(true);
 102     }
 103 
 104     private static void invokeGC() {
 105         System.out.println("Firing garbage collection!");
 106         try {
 107             StringBuilder sb = new StringBuilder();
 108             while (true) {
 109                 sb.append("any string. some test. a little bit more text." + sb.toString());
 110             }
 111         } catch (Throwable e) {
 112             // do nothing
 113         }
 114     }
 115 
 116 
 117     public static class CustomInternalFrame extends JInternalFrame {
 118         public static volatile boolean finalized = false;
 119         public static Object waiter = new Object();
 120 
 121         public CustomInternalFrame(String title) {
 122             super(title, true, true, true, true);
 123         }
 124 
 125         protected void finalize() {
 126             System.out.println("Finalized!");
 127             finalized = true;
 128             waiter.notifyAll();
 129         }
 130     }
 131 }