JFileChooser: setSelectedFile() hangs

[Guido Sautter]

Hi Ranchers,

I have a problem with JFileChooser under Windows XP (JVM version doesn't seem to matter, tried 1.4.2 and above):

The setSelectedFile() method hangs up inside JFileChooser, but only if the file previously selected is located in the user's Desktop. If the previous file resides in other sub folders of 'Documents and Settings/<userName>/...', it works OK, so it's probably not a matter of the spaces in the path.

Under Windows 2000, it works fine.

Does anyone have similar experiences, maybe even a solution or workaround? Google didn't produce any helpful results.

Thanks in advance,
Guido

[G Estes]

Can you post some code as to how you are implementing the file chooser?

[Guido Sautter]

The code belong to a File IO component of the software I write. Here the fields:
- lastSaveFile is an instance filed holding the file last saved to
- model is a method argument, basically providing the format a document was last saved in (XML, txt, etc.)
- selectedFormat is the JFileChooser FileFilter matching the saving format
- fileKeeper is an instance field, ensuring that the file name in the JFileChooserUI has the appropriate extension if the saving format changes

The line that hangs is fileChooser.setSelectedFile(target);

//determine target file
File target;
if (model == null)
target = new File(((this.lastSaveFile == null) ? new File("") : this.lastSaveFile.getParentFile()), "document.xml"); 
else if (model instanceof FileSaveOperation)
target = new File(((FileSaveOperation) model).file.getParentFile(), model.getDocumentName()); 
else
target = new File(((this.lastSaveFile == null) ? new File("") : this.lastSaveFile.getParentFile()), model.getDocumentName()); 
System.out.println("  - target file is " + target.getAbsolutePath());

//make sure target file has appropriate extension for pre-sellected format
if (selectedFormat != null) {
String extension = selectedFormat.getDefaultSaveFileExtension();
if (!target.getName().endsWith(extension))
target = new File(target.getParentFile(), (target.getName() + "." + extension));
}
System.out.println("  - file extension ensured");

//prepare dialog
this.fileChooser.setSelectedFile(target);
System.out.println("  - file preselected");
this.fileKeeper.setFile(target);
System.out.println("  - file keeper got file");
this.fileKeeper.setLoading(false);
System.out.println("  - file keeper configured");
System.out.println("  - dialog prepared");
 

JConsole shows that the invocation of setSelectedFile() hangs somewhere deep inside Swings PLaF, in FileView.ensureFileVisible(), with some Win32 classes in the stack trace. The final blocking occurs on Unsafe.wait().

Thanks for any ideas.