如何使用java代码转换mongodb查询

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

public class MongoDBQueryConverter {
    public static void main(String[] args) {
        // 连接MongoDB数据库
        MongoClient mongoClient = new MongoClient("localhost", 27017);
        MongoDatabase database = mongoClient.getDatabase("mydb");
        MongoCollection<Document> collection = database.getCollection("mycollection");

        // 构建查询条件
        Document query = new Document("name", "John");

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

        // 输出结果
        System.out.println(result.toJson());

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