修改map内数组中的对象值

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Main {
    public static void main(String[] args) {
        // 创建一个Map对象
        Map<String, List<Person>> map = new HashMap<>();

        // 创建一个包含对象的List
        List<Person> personList = new ArrayList<>();
        personList.add(new Person("Alice", 25));
        personList.add(new Person("Bob", 30));

        // 将List放入Map中
        map.put("people", personList);

        // 修改数组中的对象值
        List<Person> people = map.get("people");
        if (people != null && !people.isEmpty()) {
            Person person = people.get(0);
            person.setAge(26);
        }

        // 打印修改后的结果
        System.out.println(map.get("people"));
    }
}

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 void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

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