A guide about the different ways to create a Spring Boot project. Spring Boot is one of the most popular frameworks for creating web applications — 1. Overview In this tutorial, we’ll look into the different ways we can create a Spring Boot project. 2. Using Spring Initializer in spring.io We can create a Spring Boot project by using the Spring Initializer in start.spring.io. …

The definitive guide to handling null references in Kotlin — Overview In this article, we’ll look into the null safety in Kotlin. Any programming language which has the concept of null reference throws a NullPointerException. It has been referred to as a billion-dollar mistake. (Wiki) Nullable and Non-Nullable Type Kotlin aims at eliminating the risk of NullPointerException. …

A practical example of Hexagonal Architecture in Java — 1. Overview In this tutorial, we’ll take a look into the hexagonal architecture in Java. To illustrate this further, we’ll create a Spring Boot application. 2. Hexagonal Architecture The hexagonal architecture describes a pattern for designing software applications around the domain logic. …