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package nianling;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
public class UserName {
public static void main(String[]ages) {
User user = new User();
user.setAge(11);
user.setName("张三");
User user1 = new User();
user1.setAge(32);
user1.setName("李四");
User user2 = new User();
user2.setAge(22);
user2.setName("王二麻子");
User user3 = new User();
user3.setAge(19);
user3.setName("小淘气");
User user4 = new User();
user4.setAge(16);
user4.setName("王五");
User user5 = new User();
user5.setAge(24);
user5.setName("赵六");
ArrayList<User>list = new ArrayList<User>();
list.add(user);
list.add(user1);
list.add(user2);
list.add(user3);
list.add(user4);
list.add(user5);
Collections.sort(list,new Comparator<User>() {
@Override
public int compare(User o1, User o2) {
return o1.getAge()-o2.getAge(); // 升序
return o2.getAge()-o1.getAge(); // 降序
}
});
for (int i = 0; i < list.size(); i++) {
System.out.println("年龄 = "+list.get(i).getAge()+" 姓名 = "+list.get(i).getName());
}
}
}