如何从Mongo数据源创建不可变的Java对象

import com.mongodb.MongoClient;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;

public class ImmutableJavaObjectCreator {
    private final String name;
    private final int age;

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

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public static ImmutableJavaObjectCreator createFromMongoDB() {
        // 连接到MongoDB数据库
        MongoClient mongoClient = new MongoClient("localhost", 27017);
        MongoDatabase database = mongoClient.getDatabase("mydb");
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 获取MongoDB中的数据
        Document document = collection.find().first();

        // 创建不可变的Java对象并填充数据
        String name = document.getString("name");
        int age = document.getInteger("age");
        ImmutableJavaObjectCreator obj = new ImmutableJavaObjectCreator(name, age);

        // 关闭MongoDB连接
        mongoClient.close();

        // 返回不可变的Java对象
        return obj;
    }

    public static void main(String[] args) {
        ImmutableJavaObjectCreator obj = ImmutableJavaObjectCreator.createFromMongoDB();
        System.out.println("Name: " + obj.getName());
        System.out.println("Age: " + obj.getAge());
    }
}