java的list集合排序自定义元素方式

class Student {
    private int id;
    private String name;
    private int age;

    public Student(int id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

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

public class ListSortCustomElementsExample {
    public static void main(String[] args) {
        List<Student> students = new ArrayList<>();
        students.add(new Student(1, "Alice", 20));
        students.add(new Student(2, "Bob", 18));
        students.add(new Student(3, "Charlie", 22));
        students.add(new Student(4, "Charlie", 30));
        students.add(new Student(5, "Charlie", 12));

        students.sort((s1, s2) -> s1.getAge() - s2.getAge());

        for (Student student : students) {
            System.out.println(student);
        }
    }
}