Here’s a sample code snippet that demonstrates how to delete data from a MongoDB database using Java and the MongoDB Java Driver:
import com.mongodb.MongoClient; import com.mongodb.MongoClientURI; import com.mongodb.client.MongoCollection; import com.mongodb.client.MongoDatabase; import com.mongodb.client.model.Filters; public class MongoDBDataDeleter { public static void main(String[] args) { // MongoDB connection URI String uri = "mongodb://localhost:27017"; // Database and collection names String databaseName = "mydatabase"; String collectionName = "customers"; try { // Connect to MongoDB MongoClientURI mongoURI = new MongoClientURI(uri); MongoClient mongoClient = new MongoClient(mongoURI); // Access the database MongoDatabase database = mongoClient.getDatabase(databaseName); // Access the collection MongoCollection<Document> collection = database.getCollection(collectionName); // Delete filter String fieldName = "name"; String fieldValue = "John Doe"; collection.deleteOne(Filters.eq(fieldName, fieldValue)); System.out.println("Data deleted successfully!"); // Close the MongoDB client mongoClient.close(); } catch (Exception e) { e.printStackTrace(); } } }
Make sure you have the MongoDB Java Driver (such as mongodb-driver.jar) included in your classpath. If not, you can download it from the official MongoDB website or include it as a Maven/Gradle dependency.
The code connects to the MongoDB database using the provided connection URI, accesses the specified database and collection, defines a filter to identify the document(s) to delete (in this case, based on the name field), and performs the deletion using the deleteOne() method.
Remember to handle exceptions appropriately in your production code and close the MongoDB client to release resources.