Name: jk109818 Date: 07/09/2002


FULL PRODUCT VERSION :
java version "1.4.1-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-beta-b14)
Java HotSpot(TM) Client VM (build 1.4.1-beta-b14, mixed mode)


FULL OPERATING SYSTEM VERSION :
Windows 98 [Version 4.10.2222]

A DESCRIPTION OF THE PROBLEM :
Using the file chooser, browse to a directory with many files,

the dialog takes a long time to show. After it shows, it
will takes a long time to show the files.

The folder I tested with has:
1545 files and 49 folders. Note that Notepad.exe open this
instantly.

There is a related bug that is closed: 4621272
It says that it fixes the bug in hopper, unfortunately, I
have no way of knowing if j2sdk1.4.1 beta is "hopper" or not.

Also, note that the 2 bugs are different. The related bug
show slowness when select many files.

This bug shows slowness by merely open a directory.

Also note that with j2sdk1.4.1 beta, the previous bug is
still there, and select 1 file, the select another file,
there is a long pause between (inconsistently though, and
only happen in a directory with many files - note: just
select 1 file, not many files).



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Run the application
1) Open a JFileChooser
2) Browse to a directory that has many files
 (it's even better to have the first directory of
JFileChooser to have many files to show the effect of slowness).

EXPECTED VERSUS ACTUAL BEHAVIOR :
Things work faster.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.*;
import java.io.*;

public class BugDemonstration
{
public static void main(String args[])
{
final JFrame frame = new JFrame("The Frame");
        frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
frame.setSize(200,200);
        frame.setVisible(true);

        SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                JFileChooser file = new JFileChooser();
                file.setMultiSelectionEnabled(true);
                file.setDialogTitle
                    ("Select lots of files..." );
                file.showDialog(frame.getContentPane(), "Demonstrate problem");
                File [] selected = file.getSelectedFiles();
                System.out.println (selected.length+" files selected.");
            }
        });
    }
}
---------- END SOURCE ----------
(Review ID: 158588)
======================================================================