1.4.0 REGRESSION: JEditorPane: down arrow occasionally nonfunctional

Name: jk109818 Date: 04/10/2002


FULL PRODUCT VERSION :
java version "1.4.0-rc"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-rc-b91)
Java HotSpot(TM) Client VM (build 1.4.0-rc-b91, mixed mode)


FULL OPERATING SYSTEM VERSION :
Microsoft Windows XP [Version 5.1.2600]


ADDITIONAL OPERATING SYSTEMS :
SunOS (machine name) 5.8 Generic_108528-08 sun4u sparc
SUNW,Ultra-60



A DESCRIPTION OF THE PROBLEM :
In a JEditorPane, the down arrow has no effect after you
add text on a line preceding a blank line.


REGRESSION. Last worked in version 1.3.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. In a JEditorPane, hit Return twice.
2. Type "test".
3. Hit the up arrow twice.
4. Type "test".
5. Hit the down arrow.


EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected: Cursor moves down.

Actual: Nothing happens.



ERROR MESSAGES/STACK TRACES THAT OCCUR :
(none)

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/**
 * Tests a bug in JEditorPane which prevents the down arrow from working in
 * some cases.
 *
 * To demontrate the bug, do the following in the JEditorPane that appears:
 * 1. Hit return twice.
 * 2. Type "test".
 * 3. Hit the up arrow twice.
 * 4. Type "test".
 * 5. Hit the down arrow.
 */

import javax.swing.*;
import javax.swing.text.*;

public class TestBug {
  public static void main(String args[]) {
    JFrame f = new JFrame();
    JEditorPane jep = new JEditorPane();
    jep.setEditable(true);
    f.getContentPane().add(jep);
    f.setVisible(true);
    f.setSize(500, 500);
    f.setLocation(100,100);
  }
}

---------- END SOURCE ----------

CUSTOMER WORKAROUND :
After typing text, use left or right arrows before using
down arrow.

Release Regression From : 1.3.1_03
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: 145083)
======================================================================