MongoDB is a popular NoSQL database that allows flexible and scalable storage of data. It provides a document-oriented approach to data modeling and is widely used in modern web applications.

Java, as a robust and versatile programming language, is well-suited for interacting with databases like MongoDB. In this tutorial, we will explore how to insert data into MongoDB using Java.

Prerequisites

Before we get started, make sure you have the following:

• Java Development Kit (JDK) installed
• MongoDB Java driver added to your project (you can use Maven or Gradle for dependency management)

Connecting to MongoDB

To connect to MongoDB from Java, we first need to establish a connection to the MongoDB server. Here’s an example of how to do that:

import com.mongodb.MongoClient;
import com.mongodb.client.MongoDatabase;

public class MongoDBExample {
    public static void main(String[] args) {
        // Create MongoClient
        MongoClient mongoClient = new MongoClient("localhost", 27017);
        
        // Access database
        MongoDatabase database = mongoClient.getDatabase("mydb");
        
        System.out.println("Connected to MongoDB successfully");
        
        // Close the connection
        mongoClient.close();
    }
}

In the above code, we create a MongoClient object by passing the server address and port number. Then we access the desired database using getDatabase method. Finally, we can print a message to confirm the connection and close the connection using close method.

Inserting Data into MongoDB

Once we have established a connection, we can insert data into a collection in MongoDB.

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

public class MongoDBExample {
    public static void main(String[] args) {
        MongoClient mongoClient = new MongoClient("localhost", 27017);
        MongoDatabase database = mongoClient.getDatabase("mydb");

        // Get the collection
        MongoCollection<Document> collection = database.getCollection("myCollection");

        // Prepare the document to be inserted
        Document document = new Document("name", "John Doe")
                                  .append("age", 30)
                                  .append("email", "johndoe@example.com");

        // Insert the document
        collection.insertOne(document);

        System.out.println("Data inserted into MongoDB successfully");

        mongoClient.close();
    }
}

In the code above, we first get the collection using getCollection method. Then we create a Document object and populate it with the data we want to insert. Finally, we use the insertOne method to insert the document into the collection.

Conclusion

In this tutorial, we have learned how to connect to MongoDB from Java and insert data into a collection. MongoDB’s flexibility and Java’s ease of use make them a powerful combination for handling data storage in modern applications.

For more information and advanced operations with MongoDB and Java, refer to the official MongoDB Java driver documentation.

#mongodb #java