This quick tutorial will help you create a Scala project in IntelliJ IDEA Install the Scala plugin The first step is to install the Scala plugin. This plugin is not installed by default for you. First, go to Files->Settings: Then click on plugins->Marketplace and search for scala: Click on install. The IDE will ask you … Read more
Jakarta servlet quick start tutorial for beginners to get started building web applications using servlets technologies
In this post, I will introduce the fundamentals of serialization in Java that you need to know. The Serializable interface A class that doesn’t implement the Serializable interface cannot be serialized. In the previous post, you can see that the Car and Engine classes both implement Serializable. The Serializable interface is a marker interface. That … Read more
MongoDB Index fundamentals If you have ever worked with any database (SQL or NoSQL), you probably know that the purpose of creating indexes is to speed up the queries at the cost of create/update/delete operations. MongoDB is no exception. MongoDB uses B-Tree as indexes’ data structure. This data structure offers fast queries. However, since the … Read more
Importing sample data This post is a quick introduction to the MongoDB Aggregation Framework. It’s a part of a mini-series called Mongo DB Cheatsheets To follow the tutorial, you need to import the following data: This sample is a list of 5 rich people from two families. The data contains their net worth and their … Read more
