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 

    31 import javax.swing.*;

    32 import javax.swing.filechooser.FileSystemView;

    33 import java.io.File;

    34 

    35 public 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 }