Java For Testers, Richardson A., 2015

Java For Testers, Richardson A., 2015.

This is an introductory text. At times it takes a tutorial approach and adopts step by step instructions to coding. Some people more familiar with programming might find this slow. This book is not aimed at those people. This book is aimed at people who are approaching Java for the first time, specifically with a view to adding automation to their test approach. I do not cover automation tools in this book. I do cover the basic Java knowledge needed to write and structure code when automating. I primarily wrote this book for software testers, and the approach to learning is oriented around writing automation code to support testing, rather than writing applications. As such it might be useful for anyone learning Java, who wants to learn from a “test first” perspective. Automation to support testing is not limited to testers anymore, so this book is suitable for anyone wanting to improve their use of Java in automation: managers, business analysts, users, and of course, testers.




Inheritance.
Inheritance is an Object-oriented Design concept. Java provides an implementation of some inheritance features. In this chapter you will receive a very brief overview of inheritance, mainly so that you understand some of the mechanisms that Java provides, and to help you understand some of the more advanced sections as we work through the book. I have covered inheritance late in the book because you don’t really need it for the early parts of this book. The book started by having you ‘use’ Java. You didn’t really need to extend any classes. When we start creating our own Exception classes, then we will need to extend other classes, so we need to understand the Java concept of Inheritance. You have seen that Java Classes have methods and fields. And that those methods and fields could be made public or private. Inheritance provides one way of allowing us to re-use those methods in other classes. We make one object inherit from another by use of the extends keyword.



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