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JAVA利用List集合按照某个元素对实体排序


User类

package jihe;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
* @author yeqv
* @program A2
* @Classname User
* @Date 2022/1/20 21:45
* @Email w16638771062@163.com
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
private int id;
private int chengji;

}

Test测试类

package jihe;

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

/**
* @author yeqv
* @program A2
* @Classname Test
* @Date 2022/1/20 21:49
* @Email w16638771062@163.com
*/
public class Test {
public static void main(String[] args) {
User user1 = new User();
user1.setId(12);
user1.setChengji(89);
User user2 = new User();
user2.setId(11);
user2.setChengji(84);
User user3 = new User();
user3.setId(16);
user3.setChengji(49);
List<User> list = new ArrayList<>();
list.add(user1);
list.add(user2);
list.add(user3);
list.sort((a, b) -> a.getChengji() - b.getChengji());
for (User user : list) {
System.out.println(user);
}

}


}

结果:按照成绩排

JAVA利用List集合按照某个元素对实体排序_开发语言



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