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How to create a MongoDB collection using Java?
You can create a collection in MongoDB using the db.createCollection() method.
Syntax
db.createCollection(name, options)
Where
db is the database.
name is the name of the collection you want to create.
Option is the set of optional parameters such as capped, auto indexed, size and, max.
Example
> use myDatabase
switched to db myDatabase
> db.createCollection("myCollection")
{ "ok" : 1 }Using Java program
In Java, you can create a collection using the createCollection() method of the com.mongodb.client.MongoDatabase interface. This method accepts a string value representing the name of the collection.
Therefore to create a collection in MongoDB using Java program −
Make sure you have installed MongoDB in your system
Add the following dependency to its pom.xml file of your Java project.
<dependency> <groupId>org.mongodb</groupId> <artifactId>mongo-java-driver</artifactId> <version>3.12.2</version> </dependency>
Create a MongoDB client by instantiating the MongoClient class.
Connect to a database using the getDatabase().
Invoke the createCollection() method by passing the name of the collection(string).
Example
import com.mongodb.client.MongoDatabase;
import com.mongodb.MongoClient;
public class CreatingCollection {
public static void main( String args[] ) {
//Creating a MongoDB client
MongoClient mongo = new MongoClient( "localhost" , 27017 );
//Connecting to the database
MongoDatabase database = mongo.getDatabase("myDatabase");
//Creating a collection
database.createCollection("sampleCollection");
System.out.println("Collection created successfully");
}
}Output
Collection created successfully
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