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1.4.2 b17Fixed |
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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) ======================================================================
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