从HashMap获取值并填充Java对象

import java.util.HashMap;

public class Main {
    public static void main(String[] args) {
        // 创建一个HashMap对象并添加键值对
        HashMap<String, String> hashMap = new HashMap<>();
        hashMap.put("name", "John");
        hashMap.put("age", "25");
        hashMap.put("gender", "male");

        // 定义一个Java对象
        Person person = new Person();

        // 从HashMap获取值并填充Java对象
        String name = hashMap.get("name");
        person.setName(name);

        String age = hashMap.get("age");
        person.setAge(Integer.parseInt(age));

        String gender = hashMap.get("gender");
        person.setGender(gender);

        // 打印填充后的Java对象
        System.out.println(person);
    }
}

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

    // 省略getter和setter方法

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