Java的Unicode和codePoint

/* * To change this template, choose Tools | Templates * and open the template in the editor. */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) {//        // TODO code application logic here//        char d = 0x0041;//        String s3 = "