Java MongoDB: querying with numberLong field

    MongoClient client = new MongoClient();
    MongoDatabase mongoDb = client.getDatabase("test");
    MongoCollection<Document> mongoCollection = mongoDb
            .getCollection("numberFormatTest");

    mongoCollection.drop();

    Document smith = new Document("name", "Smith").append("age", 30)
            .append("profession", "Programmer")
            .append("phoneNo", "9848022338");

    Document jones = new Document("name", "Jones").append("age", 30)
            .append("profession", "Hacker")
            .append("phoneNo", "9000000000000");

    printJson(smith);
    printJson(jones);
    // mongoCollection.insertMany(asList(smith,jones));

    System.out.println("Phone number: "
            + Long.valueOf(smith.getString("phoneNo")).longValue());

The above piece of code might work for you. At the moment, I tried with find but it will work for updates as well.

Even in the above link shared by you,NumberLong wrapper saves the field value in string datatype not as a long datatype. The below statement proves it.

"The NumberLong() wrapper accepts the long as a string:"

I think it was just my oversight in this case. The query here actually works:

 query.addCriteria(Criteria.where("time").is(article.getDate()));

I had called my object field as "date" instead of "time", which met it did not get picked up when i queried. Changing it as follows made it work properly.

 query.addCriteria(Criteria.where("date").is(article.getDate()));