根据变量对自定义java类的数组列表进行排序

public class Person {
    private String name;
    private int age;

    // 构造函数和其他方法

    // getter和setter方法
}

ArrayList<Person> personList = new ArrayList<>();
personList.add(new Person("Alice", 25));
personList.add(new Person("Bob", 30));
personList.add(new Person("Charlie", 20));

Collections.sort(personList, (p1, p2) -> p1.getName().compareTo(p2.getName()));

for (Person person : personList) {
    System.out.println(person.getName() + " - " + person.getAge());
}

import java.util.ArrayList;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        ArrayList<Person> personList = new ArrayList<>();
        personList.add(new Person("Alice", 25));
        personList.add(new Person("Bob", 30));
        personList.add(new Person("Charlie", 20));

        Collections.sort(personList, (p1, p2) -> p1.getName().compareTo(p2.getName()));

        for (Person person : personList) {
            System.out.println(person.getName() + " - " + person.getAge());
        }
    }
}

class Person {
    private String name;
    private int age;

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

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}