Name: nt126004 Date: 03/20/2002


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]


A DESCRIPTION OF THE PROBLEM :
Collator instances are not being created with the
appropriate localized ruleset. Most of the Locales I created
collators for only had the default ruleset defining their
collation behavior. (I didn't test them all, but the ones
I tested exhibited this problem)

REGRESSION. Last worked in version 1.3.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.Get a collator via Collator.getInstance(Locale l)
(the locales I tested were JAPAN, US, and CHINESE)
2.Get the rules the collator is using ( (RuleBasedCollator)
collator.getRules();
3.Compare the rules of the locales, I just displayed them
in the system console or in a jsp page

EXPECTED VERSUS ACTUAL BEHAVIOR :
I expect to get a collator populated with a japanese
collation ruleset. I get a collator instantiated with the
default ruleset only.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No error messages occured. I suspect this is because the implementation of
Collator.getInstance() will catch the first ParseException thrown by creating a
localized collator, and will only print a stack trace if creating a collator
with the default ruleset fails.

(BTW I was getting a ParseException when I tried to create my own
RuleBasedCollator using the "CollationElements" retrieved directly from the
Japanese ResourceBundle "LocaleElements".

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.util.*;
import java.text.*;

public class SortUtils {
    private static final HashMap cache = new HashMap(5);
    private SortUtils() {}
    
    static final public Collator getCollator(Locale l) {
        Collator c = (Collator)cache.get(l);
        if (c == null) {
            c = createInstance(l);
            cache.put(l, c);
        }
        
        return c;
    }
    
    static final private Collator createInstance(Locale l) {
        Collator rv = Collator.getInstance(l);
        
        String lang = l.getLanguage();
        if (lang.equals( "ja" ) ) {
            rv.setStrength( Collator.PRIMARY );
        }
        
        return rv;
    }

    //This code will print the default rules when compiled and running under
    //jdk 1.4, but it will print a much lenghtier ruleset for Japanese
    //characters when run under 1.3.1
    static final public void main(String[] args) {
        Collator c = SortUtils.getCollator( Locale.JAPAN );
        System.out.println( "Rules:\n" + ((RuleBasedCollator)c).getRules());
    }
}
---------- END SOURCE ----------

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: 144250)
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