Java with MongoDB:- The MongoDB is the Document type Database. It is set of Collections and documents. it supports the NOSQL and to manage the collections inside the collection there are numbers of documents. The Below code will show you how to connect your java Program with MongoDB.

NOTE:- Firstly you have to download the mongo.jar and you need to include the mongo.jar into your classpath.

package com.mkyong.core;

import java.net.UnknownHostException;
import java.util.Date;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.MongoClient;
import com.mongodb.MongoException;


public class Main {


  public static void main(String[] args) {

    try {

    /* Connect to MongoDB */

    MongoClient mongo = new MongoClient("localhost", 27017);

    /* Get the database name as "manish" */
    // if database doesn't exists, MongoDB will create it for you
    DB db = mongo.getDB("manish");

    /* Get collection / table from 'manish' ****/
    // if collection doesn't exists, MongoDB will create it for you
    DBCollection table = db.getCollection("emp");

    /* Insert the Document */

    BasicDBObject document = new BasicDBObject();
    document.put("name", "manish");
    document.put("desig", "Software Developer");
    document.put("joinDate", new Date());
    table.insert(document);

    /* Find and display Record */

    BasicDBObject searchQuery = new BasicDBObject();
    searchQuery.put("name", "manish");

    DBCursor cursor = table.find(searchQuery);

    while (cursor.hasNext()) {
        System.out.println(cursor.next());
    }

    /* search document where name="manish" and update it with "manisha" */

    BasicDBObject query = new BasicDBObject();
    query.put("name", "manish");

    BasicDBObject newDocument = new BasicDBObject();
    newDocument.put("name", "manisha");

    BasicDBObject updateObj = new BasicDBObject();
    updateObj.put("$set", newDocument);

    table.update(query, updateObj);



    System.out.println("Successfully Done");

    } catch (UnknownHostException e) {
    e.printStackTrace();
    } catch (MongoException e) {
    e.printStackTrace();
    }

  }
}