如何获取HashMap中包含的所有键的特定属性值？

import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] args) {
        // 创建一个HashMap并添加键值对
        Map<String, Person> hashMap = new HashMap<>();
        hashMap.put("key1", new Person("John", 25));
        hashMap.put("key2", new Person("Jane", 30));
        hashMap.put("key3", new Person("Tom", 35));

        // 遍历HashMap的所有键
        for (String key : hashMap.keySet()) {
            // 获取特定属性值
            Person person = hashMap.get(key);
            System.out.println("Key: " + key + ", Name: " + person.getName() + ", Age: " + person.getAge());
        }
    }

    // 示例Person类，具有name和age属性
    static 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;
        }
    }
}