State Machine Design pattern — Why & How? Example through Spring State Machine — Part 1

State Machine modeling is one of the most traditional patterns in Computer Science. It’s one of those design patterns which impacts our daily life through different software. It’s not a coding oriented ( Gang of Four type ) design pattern, but it’s system oriented, mostly used to model around business use cases. Courtesy: Google. Representational image.What is a State Machine in laymen terms:Let’s