Different sort behaviour

Question

Hello,
can anyone tell me the cause ?
when i run the code below with -Duser.language=tr JVM environment, it works expected well. But when i run it with -Duser.language=en JVM environment then some words sorted wrongly?
I've used collator for correct turkish sorting, and this corrects some sorting problems. But this time we have some problems on accent chacacters depends on JVM user.language environment. What causes this, and how can a solve this?
Thanks,
mustafa
output of -Duser.language=en //wrong one
[Çam
Can
Candar
Övünç
Özakat
Özcan
Özcan
Özcan
Özdemir
Özer
Sagun
Şahin
Sarıtaş
Seklice
Şengül]
output of -Duser.language=tr //correct one
[Can
Candar
Çam
Övünç
Özakat
Özcan
Özcan
Özcan
Özdemir
Özer
Sagun
Sarıtaş
Seklice
Şahin
Şengül]
The code:
import java.text.Collator;
import java.text.ParseException;
import java.text.RuleBasedCollator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
public class kollator {
      * @param args
     static Collator collator=Collator.getInstance(new Locale("tr", "TR"));
     static final Comparator<String> MYCOMPARATOR = new Comparator<String>() {
          public int compare(String s1, String s2) {
            return collator.getInstance().compare(s1, s2);
     public static void main(String[] args) {
          String[] strs={
                    "Can",
                    "Candar",
                    "Çam",
                    "Övünç",
                    "Özakat",
                    "Özcan",
                    "Özcan",
                    "Özcan",
                    "Özdemir",
                    "Özer",
                    "Sagun",
                    "&#350;ahin",
                    "Sar&#305;ta&#351;",
                    "Seklice",
                    "&#350;engül",
        List l=Arrays.asList(strs);
        Collections.sort(l, MYCOMPARATOR);
        System.out.println(l.toString().replaceAll(",", "\n"));
}Edited by: yorukoglu on May 15, 2009 1:17 AM

Answer 1

Well, I don't know much abuot collation and internationalisation (being English the world is already in my language!), but...
In your custom comparator, it would appear that you are calling the static getInstance() method through the collator instance (you can have Eclipse and maybe other IDEs warn you about this because it almost always represents a bug). So you're making a new instance without passing in a Locale. And I guess this sorting according to your user.language setting.