package com.test;

 import java.util.Arrays;

 import org.bson.Document;

 import com.mongodb.MongoClient;

 import com.mongodb.client.MongoCollection;

 import com.mongodb.client.MongoDatabase;

 public class MongoDb_Test2 {

     public static void main(String[] args) {

         MongoClient mongoClient = new MongoClient( "localhost" ,  );

         MongoDatabase database = mongoClient.getDatabase("mydb");

         MongoCollection<Document> collection = database.getCollection("test");

         System.out.println(collection.count());

         Document doc = new Document("name", "MongoDB")

         .append("type", "database")

         .append("count", )

         .append("versions", Arrays.asList("v3.2", "v3.0", "v2.6"))

         .append("info", new Document("x", ).append("y", ));

         collection.insertOne(doc);

         System.out.println(collection.count());

         System.out.println("done!");

     }

 }

        FindIterable<Document> iterable = collection.find().limit();

        MongoCursor<Document> cursor = iterable.iterator();

        if(cursor.hasNext()) {

            Document user = (Document)cursor.next();

            System.out.println(user.get("name"));

            System.out.println(user.toString());

        }

        cursor.close();