Introduction There is an awful lot that goes into writing good code that abides by proper Object-Oriented Programming principles. In this tutorial I will basically cover the importance and significance of writing quality code (though I feel that quality code is subjective) thereby avoding “Oops in Oop.” Note: “Oops” is basically an exclamation made after a significant mistake or accident rather. Getting Started Before being able to follow this tutorial and get the best out of it, you have to meet up with the following perquisites.