1 /*
   2  * Copyright (c) 2010, 2016, 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 @(#)bug6520101
  26  * @key headful
  27  * @bug 6520101
  28  * @summary JFileChooser throws OOM in 1.4.2, 5.0u4 and 1.6.0
  29  * @author Praveen Gupta
  30  * @run main/othervm/timeout=600 -Xmx8m -verify bug6520101
  31 */
  32 
  33 import javax.swing.*;
  34 import java.awt.event.ActionEvent;
  35 import java.awt.event.ActionListener;
  36 
  37 public class bug6520101 implements Runnable {
  38 
  39     private static final int ATTEMPTS = 500;
  40     private static final int INTERVAL = 100;
  41 
  42     private static final boolean ALWAYS_NEW_INSTANCE = false;
  43     private static final boolean DO_GC_EACH_INTERVAL = false;
  44     private static final boolean UPDATE_UI_EACH_INTERVAL = true;
  45     private static final boolean AUTO_CLOSE_DIALOG = true;
  46 
  47     private static JFileChooser CHOOSER;
  48 
  49     public static void main(String[] args) throws Exception {
  50         UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
  51 
  52         for (int i = 0; i < ATTEMPTS; i++) {
  53             doAttempt();
  54         }
  55 
  56         System.out.println("Test passed successfully");
  57     }
  58 
  59     private static void doAttempt() throws InterruptedException {
  60         if (ALWAYS_NEW_INSTANCE || (CHOOSER == null))
  61             CHOOSER = new JFileChooser(".");
  62 
  63         if (UPDATE_UI_EACH_INTERVAL) {
  64             CHOOSER.updateUI();
  65         }
  66 
  67         if (AUTO_CLOSE_DIALOG) {
  68             Thread t = new Thread(new bug6520101(CHOOSER));
  69             t.start();
  70             CHOOSER.showOpenDialog(null);
  71             t.join();
  72         } else {
  73             CHOOSER.showOpenDialog(null);
  74         }
  75 
  76         if (DO_GC_EACH_INTERVAL) {
  77             System.gc();
  78         }
  79     }
  80 
  81     private final JFileChooser chooser;
  82 
  83     bug6520101(JFileChooser chooser) {
  84         this.chooser = chooser;
  85     }
  86 
  87     public void run() {
  88         while (!this.chooser.isShowing()) {
  89             try {
  90                 Thread.sleep(30);
  91             } catch (InterruptedException exception) {
  92                 exception.printStackTrace();
  93             }
  94         }
  95 
  96         Timer timer = new Timer(INTERVAL, new ActionListener() {
  97             public void actionPerformed(ActionEvent e) {
  98                 chooser.cancelSelection();
  99             }
 100         });
 101 
 102         timer.setRepeats(false);
 103         timer.start();
 104     }
 105 }