collatordemo.java

这是一个英文版的《Java程序设计与问题解决》现在好多大学都当成教材

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 * fee is hereby granted provided that this copyright notice
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import java.util.*;
import java.text.*;

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);
   }
}