MongoDBCluster.java

import java.util.Arrays;

import com.mongodb.MongoClientSettings;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoIterable;

public static void main( String[] args )
    {
        String user = "sna";
        String database = "admin";
        String password = "Rahas!asna20!9";
        MongoCredential credential = MongoCredential.createCredential(user, database, password.toCharArray());

        MongoClient mongoClient = MongoClients.create(
                MongoClientSettings.builder()
                .applyToClusterSettings(builder ->
                        builder.hosts(Arrays.asList(
                                new ServerAddress("192.168.114.232", 27017),
                                new ServerAddress("192.168.114.232", 27017),
                                new ServerAddress("192.168.114.232", 27017)))
                        )
                .credential(credential)
                .build()
                );
        MongoIterable<String> listDatabase = mongoClient.listDatabaseNames();
        for(String s : listDatabase) {
            System.out.println(s);
        }
        mongoClient.close();
    }