Collator based compare : Collator « I18N « Java Tutorial

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3. Collator

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import java.text.Collator;
import java.util.Locale;

public class CollatorDemo {

  public static void sortStrings(Collator collator, String[] words) {
    String tmp;
    for (int i = 0; i < words.length; i++) {
      for (int j = i + 1; j < words.length; j++) {
        // Compare elements of the array two at a time.
        if (collator.compare(words[i], words[j]) > 0) {
          // Swap words[i] and words[j]
          tmp = words[i];
          words[i] = words[j];
          words[j] = tmp;
        }
      }
    }
  }

  public static void printStrings(String[] words) {
    for (int i = 0; i < words.length; i++) {
      System.out.println(words[i]);
    }
  }

  public static void testCompare() {

    Collator myCollator = Collator.getInstance(new Locale("en", "US"));

    System.out.println(myCollator.compare("abc", "def"));
    System.out.println(myCollator.compare("rtf", "rtf"));
    System.out.println(myCollator.compare("xyz", "abc"));
  }

  static public void main(String[] args) {

    testCompare();
    System.out.println();

    Collator fr_FRCollator = Collator.getInstance(new Locale("fr", "FR"));
    Collator en_USCollator = Collator.getInstance(new Locale("en", "US"));

    String eWithCircumflex = new String("\u00EA");
    String eWithAcute = new String("\u00E9");

    String peachfr = "p" + eWithAcute + "ch" + eWithAcute;
    String sinfr = "p" + eWithCircumflex + "che";

    String[] words = { peachfr, sinfr, "peach", "sin" };

    sortStrings(fr_FRCollator, words);
    System.out.println("Locale: fr_FR");
    printStrings(words);

    System.out.println();

    sortStrings(en_USCollator, words);
    System.out.println("Locale: en_US");
    printStrings(words);
  }
}