Name: jk109818 Date: 03/13/2002
FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)
FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]
EXTRA RELEVANT SYSTEM CONFIGURATION :
Pentium III 1 GHz with 512 MB of RAM
A DESCRIPTION OF THE PROBLEM :
When using JFileChooser to browse directories with a large
number of files it takes a long time to load the directory.
Also by a large number of files I mean >50 which really
isn't that many there is a noticeable delay. The more files
the longer it takes.
I know it was not this slow with 1.3.1 so it is something
with 1.4. Also, if I just do a dir.list() (dir is a File
object that is a directory) and put these in a JList it is
not slow regardless of the layout orientation of the list.
I am trying to access them on a local hard drive not
networked. Furthermore I have a fairly fast machine
considering the your documentation shows a pentium 166 with
32 MB of RAM.
REGRESSION. Last worked in version 1.3.1
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Get JFileChooser
2. Goto directory with >50 files has noticeable delay
EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected: when double clicking on directory in JFileChooser
the list of files for that directory should appear
instantly provided there are a reasonable number of files
(< 1000 say) in the directory.
Actual: there is a noticeable delay when there are > 50
files in the directory
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
* Should see noticeable delay to show the list of files when
* you open try to view the contents of a directory with a large
* number of files.
public class FileChooserTest extends JFrame
getContentPane().add(new JFileChooser(), BorderLayout.CENTER);
public void actionPerformed(ActionEvent e)
public static void main(String args)
FileChooserTest test=new FileChooserTest();
---------- END SOURCE ----------
CUSTOMER WORKAROUND :
Use 1.3.1 or write my own FileChooser
Release Regression From : 1.3.1
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.
(Review ID: 144113)