Java SE (Java Platform, Standard Edition)

Hi,

When I open a JFileChooser save dialog the EDT thread hangs indefinitely. From the stack trace I can see that it is waiting indefinitely when it tries to check if a file is a link or not. This happens only sometimes.The default selected directory(My Documents) does not contain any links or shortcuts.

Following is the stack trace of AWT-EventQueue thread:

"AWT-EventQueue-2" prio=6 tid=0x039c9400 nid=0x1210 waiting on condition [0x0400e000..0x0400fb94]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0ae38cd0> (a java.util.concurrent.FutureTask$Sync)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at sun.awt.shell.Win32ShellFolderManager2$ComInvoker.invoke(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.hasAttribute(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.isLink(Unknown Source)
- locked <0x0ae38b00> (a sun.awt.shell.Win32ShellFolder2)
at javax.swing.filechooser.FileSystemView.isFileSystem(Unknown Source)
at javax.swing.filechooser.FileSystemView.getSystemDisplayName(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI$BasicFileView.getName(Unknown Source)
at javax.swing.JFileChooser.getName(Unknown Source)
at sun.swing.FilePane$FileRenderer.getListCellRendererComponent(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.updateLayoutState(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at javax.swing.ScrollPaneLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)
- locked <0x0914e040> (a java.awt.Component$AWTTreeLock)
at java.awt.Dialog.conditionalShow(Unknown Source)
- locked <0x0914e040> (a java.awt.Component$AWTTreeLock)
at java.awt.Dialog.show(Unknown Source)
at javax.swing.JFileChooser.showDialog(Unknown Source)
at javax.swing.JFileChooser.showSaveDialog(Unknown Source)
at com.text.SaveApp.launchExportDialog(ActionManager.java:1356)
at com.text.SaveApp.actionPerformed(ActionManager.java:608)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

"Basic L&F File Loading Thread" prio=6 tid=0x03413800 nid=0x1438 waiting on condition [0x0503f000..0x0503fd94]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0ae389c0> (a java.util.concurrent.FutureTask$Sync)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at sun.awt.shell.Win32ShellFolderManager2$ComInvoker.invoke(Unknown Source)
at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run0(Unknown Source)
at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run(Unknown Source)

"Swing-Shell" daemon prio=6 tid=0x03b8e800 nid=0x7e4 waiting for monitor entry [0x0437f000..0x0437fb14]
java.lang.Thread.State: BLOCKED (on object monitor)
at sun.awt.shell.Win32ShellFolder2.isFileSystem(Unknown Source)
- waiting to lock <0x0ae38b00> (a sun.awt.shell.Win32ShellFolder2)
at sun.awt.shell.Win32ShellFolder2.equals(Unknown Source)
at java.util.AbstractList.equals(Unknown Source)
at java.util.Vector.equals(Unknown Source)
- locked <0x0ae38b90> (a java.util.Vector)
at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread$1.call(Unknown Source)
at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread$1.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at sun.awt.shell.Win32ShellFolderManager2$ComInvoker$3.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


Let me know if any one has faced similar problems.