java List 排序实例详解
//1.新建一个实体类User
public class User {String name;Integer age;public User(String name, Integer age) {super();this.age = age;this.name = name;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}}?//2.具体的比较类，实现Comparator接口
?
import java.util.Comparator;/** * @version 创建时间：2011-10-17 上午09:52:28 * 类说明 */public class ComparatorUser implements Comparator {@Override //首先比较年龄，如果年龄相同，则比较名字public int compare(Object o1, Object o2) {User user1 = (User)o1;User user2 = (User)o2; int flag = (user1.getAge()).compareTo(user2.getAge());if (flag == 0) {return user1.getName().compareTo(user2.getName());} else {return flag;}}}??
//3.排序测试类
?
package com.comparator;import java.util.ArrayList;import java.util.Collections;import java.util.List;public class SortTest {/** * @param args */public static void main(String[] args) {List<User> userlist = new ArrayList<User>();userlist.add(new User("aa",4));userlist.add(new User("dd",8));userlist.add(new User("cc",3));userlist.add(new User("ff",4));userlist.add(new User("bb",41));userlist.add(new User("jj",1));userlist.add(new User("nn",5));ComparatorUser comparatorUser = new ComparatorUser();Collections.sort(userlist, comparatorUser);for (User user : userlist) {System.out.println(user.getAge()+"*****"+user.getName());}//for (int i=0; i<userlist.size(); i++) {//User user_temp = (User)userlist.get(i);//System.out.println(user_temp.getAge() + "====" + user_temp.getName());//}}}来源：http://www.dream-chase.com
java List 排序实例详解?? ? ?? ?java环境变量配置
Java 获取路径?? ? ? ? ? ? ? ? ? ? ??Chase_Java容器遍历的方法
java入门?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??Java菱形
Java倒三角?? ? ? ? ? ? ? ? ? ? ? ? ??Java九九乘法表
java-俄罗斯方块?? ? ? ? ? ? ? ? ??猜数字