| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
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| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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| */ |
| |
| /* @test |
| @bug 6688203 |
| @summary Memory leak and performance problems in the method getFileSystemView of FileSystemView |
| @author Pavel Porvatov |
| @modules java.desktop/javax.swing.filechooser:open |
| @run main bug6688203 |
| */ |
| |
| import javax.swing.*; |
| import javax.swing.filechooser.FileSystemView; |
| import java.io.File; |
| import java.lang.reflect.Field; |
| |
| public class bug6688203 { |
| public static void main(String[] args) { |
| // Create an instance of FileSystemView |
| FileSystemView.getFileSystemView(); |
| |
| int startCount = UIManager.getPropertyChangeListeners().length; |
| |
| for (int i = 0; i < 100; i++) { |
| FileSystemView.getFileSystemView(); |
| } |
| |
| if (startCount != UIManager.getPropertyChangeListeners().length) { |
| throw new RuntimeException("New listeners were added into UIManager"); |
| } |
| |
| FileSystemView fileSystemView = FileSystemView.getFileSystemView(); |
| File file = new File("Some file"); |
| |
| for (UIManager.LookAndFeelInfo lafInfo : UIManager.getInstalledLookAndFeels()) { |
| try { |
| UIManager.setLookAndFeel(lafInfo.getClassName()); |
| } catch (Exception e) { |
| // Ignore such errors |
| System.out.println("Cannot set LAF " + lafInfo.getName()); |
| |
| continue; |
| } |
| |
| fileSystemView.getSystemDisplayName(file); |
| |
| try { |
| Field field = FileSystemView.class.getDeclaredField("useSystemExtensionHiding"); |
| |
| field.setAccessible(true); |
| |
| Boolean value = field.getBoolean(fileSystemView); |
| |
| if (value != UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding")) { |
| throw new RuntimeException("Invalid cached value of the FileSystemView.useSystemExtensionHiding field"); |
| } |
| } catch (Exception e) { |
| throw new RuntimeException("Cannot read the FileSystemView.useSystemExtensionHiding field", e); |
| } |
| } |
| } |
| } |