如何在java中构建嵌套的MongoDB查询？

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

public class MongoDBExample {
    public static void main(String[] args) {
        // 连接到MongoDB数据库
        MongoClient mongoClient = MongoClients.create("mongodb://localhost:27017");
        MongoDatabase database = mongoClient.getDatabase("mydb");

        // 获取集合
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 构建嵌套查询
        Document query = new Document("name", "John")
                .append("age", new Document("$gt", 25))
                .append("address.city", "New York");

        // 执行查询
        Document result = collection.find(query).first();

        // 处理查询结果
        if (result != null) {
            System.out.println(result.toJson());
        } else {
            System.out.println("No matching documents found.");
        }

        // 关闭连接
        mongoClient.close();
    }
}