bug6868611.java revision 1915:86be1dc90f57 
1/*
2 * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24/* @test
25   @bug 6868611
26   @summary FileSystemView throws NullPointerException
27   @author Pavel Porvatov
28   @run main bug6868611
29*/
30
31import javax.swing.*;
32import javax.swing.filechooser.FileSystemView;
33import java.io.File;
34
35public class bug6868611 {
36    private static final int COUNT = 1000;
37
38    public static void main(String[] args) throws Exception {
39        String tempDirProp = System.getProperty("java.io.tmpdir");
40
41        final String tempDir = tempDirProp == null || !new File(tempDirProp).isDirectory() ?
42            System.getProperty("user.home") : tempDirProp;
43
44        System.out.println("Temp directory: " + tempDir);
45
46        // Create 1000 files
47        for (int i = 0; i < 1000; i++) {
48            new File(tempDir, "temp" + i).createNewFile();
49        }
50
51        // Init default FileSystemView
52        SwingUtilities.invokeAndWait(new Runnable() {
53            public void run() {
54                FileSystemView.getFileSystemView().getFiles(new File(tempDir), false);
55            }
56        });
57
58        for (int i = 0; i < COUNT; i++) {
59            Thread thread = new MyThread(tempDir);
60
61            thread.start();
62
63            Thread.sleep((long) (Math.random() * 100));
64
65            thread.interrupt();
66
67            if (i % 100 == 0) {
68                System.out.print("*");
69            }
70        }
71
72        System.out.println();
73
74        // Remove 1000 files
75        for (int i = 0; i < 1000; i++) {
76            new File(tempDir, "temp" + i).delete();
77        }
78    }
79
80    private static class MyThread extends Thread {
81        private final String dir;
82
83        private MyThread(String dir) {
84            this.dir = dir;
85        }
86
87        public void run() {
88            FileSystemView fileSystemView = FileSystemView.getFileSystemView();
89
90            fileSystemView.getFiles(new File(dir), false);
91        }
92    }
93}
94