FULL PRODUCT VERSION :
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-b28)
Java HotSpot(TM) Client VM (build 1.4.2-b28, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
Input methods can't consume KeyEvents containing [Backspace].

If an input method get's a KEY_TYPED KeyEvent containing the keyChar [Backspace] and consumes this event, the very event will still be handled by the targeted (J)TextArea,

Write a character in an TextField, the type Backspace and the _consumed_ KeyEvent will delete the character.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. compile the attached source

2. pack it in a jar

3. add the file META-INF/services/java.awt.im.spi.InputMethodDescriptor with the content :
net.sourceforge.jgim.debug.XBackspace
to the jar.

4. place the jar in the java ext. dir

5. start an GUI / Swing application

6. select the input method XBackspace

7. type a character

8. type [Backspace]

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
the text shoud not be changed after pressing [Backspace]
ACTUAL -
the character in front of the carret is deleted

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package net.sourceforge.jgim.debug;

import java.awt.im.spi.*;
import java.awt.im.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Locale;

public class XBackspace implements InputMethodDescriptor,InputMethod {
    
    private static Locale locale = new Locale("de","","XBackspace");
    private InputMethodContext Context;
   
    public void dispatchEvent(AWTEvent event) {
if(event.getID()==KeyEvent.KEY_TYPED){
KeyEvent keyEvent = (KeyEvent) event;
if(keyEvent.getKeyChar()=='\b'){
keyEvent.consume(); // try to cancel [Backspace]
}
}
    }
   
    public XBackspace(){}
        
    public boolean setLocale(Locale requestLocale) {
return requestLocale.equals(locale);
    }
    
    public void setInputMethodContext(InputMethodContext context) {
Context = context;
    }
       
    public Locale[] getAvailableLocales(){ return new Locale[]{locale}; }
    
    public String getInputMethodDisplayName(Locale inputLocale, Locale displayLanguage) {
return "Backspace Debug";
    }
    
    public Locale getLocale() { return locale; }
    
    public boolean hasDynamicLocaleList() { return false; }
    
    public boolean isCompositionEnabled() { return false; }
    
    public void reconvert() { throw new UnsupportedOperationException();}
    
    public Image getInputMethodIcon(Locale inputLocale) { return null; }
    
    public void removeNotify() {}
    
    public void setCharacterSubsets(java.lang.Character.Subset[] subsets) {}
    
    public void setCompositionEnabled(boolean enable) {}
    
    public void notifyClientWindowChange(java.awt.Rectangle bounds) {}
    
    public void hideWindows() {}
    
    public Object getControlObject() { return null; }
    
    public void activate() {}
    
    public InputMethod createInputMethod(){return this;}

    public void deactivate(boolean isTemporary) {}
    
    public void dispose() {}

    public void endComposition() {}
}

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