package com.sun;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

public class Test09 {

    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        Dog dog[] = new Dog[3];

         dog[0]= new Dog("wangchai",10);

         dog[1]= new Dog("laifu",9);

         dog[2]= new Dog("ww",20);

        Arrays.sort(dog);

        for(int i=0;i<dog.length;i++){

            System.out.println(dog[i].name);

        }

    }

}

class Dog implements  Comparable{

    public Integer tizhong = 0;

    public String name = "";

    public Dog(String name, int tizhong) {

        this.name = name;

        this.tizhong = tizhong;

    }

    //按年龄排序

    @Override

/*    public int compareTo(Object o) {

        // TODO Auto-generated method stub

        Dog s=(Dog)o;

        return tizhong>s.tizhong?1:(tizhong==s.tizhong?0:-1);

    }*/

    //按名字排序

/*    public int compareTo(Object o)

       {

        Dog s=(Dog)o;

             int result=name.compareTo(s.name);

             return result;

       }*/

    //如果先按数字再按字符排序，则这样写：

     public int compareTo(Object o)

      {

        Dog s=(Dog)o;

             int result= tizhong>s.tizhong?1:(tizhong==s.tizhong?0:-1);

              if (0==result){

                  result=name.compareTo(s.name);

               }

             return result;

      }

}