Java的Unicode16和CodePoint相关问题

package sortandcollections;

import java.util.ArrayList;
import java.util.List;
import java.util.TreeSet;

/**
 *
 * @author Lowitty
 */
public class SortAndCollections {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {        
        String s = "皙殽asdf涓嶅拫鍜嬪湴鍗○獨ラ粵鍜嬬強asd皙殽has鍜媎皙殽adn皙殽sad皙殽";
        int cpCount = s.codePointCount(0, s.length());
        int firCodeIndex = s.offsetByCodePoints(0, 0);
        int lstCodeIndex = s.offsetByCodePoints(0, cpCount - 1);
        
        System.out.println(firCodeIndex + "\n" + lstCodeIndex + "\n" + cpCount + "\n" + s.length());
        
        int counter = 0;
        
        for(int index = firCodeIndex ; index <= lstCodeIndex;index += ((Character.isSupplementaryCodePoint(s.codePointAt(index)))?2:1)){
            counter ++;
            System.out.println(counter + "\t" 
                    +index + "\t"
                    +s.codePointAt(index) +"\t" 
                    + Character.charCount(s.codePointAt(index)) + "\t" 
                    + Character.getName(s.codePointAt(index)) + "\t\t\t"
                    + String.valueOf(Character.toChars(s.codePointAt(index))));
        }   
    }
}