import com.mongodb.Mongo;
import com.mongodb.DBCollection;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;

public class Test {

    public static void main(String[] args) throws Exception {

        Mongo m = new Mongo();
        DB db = m.getDB("test_db_1");
        DBCollection coll = db.getCollection("test_collection_1");

        BasicDBObject doc = new BasicDBObject();
        doc.put("name.first", "First Name");
        doc.put("name.last", "Last Name");
        coll.insert(doc);

    }
}