Java language family

Java is a widely used by testers in traditional corporations. It runs inside a virtual machine (JDK) thats also used as base for other languages like: Kotlin, Scala, Clojure and Groovy.

Why you should learn

• Large adoption on corporations
• Mature testing ecosystem
• All testing levels nd multiple testing types
• Can be used to test software written in any other languages:
  • Web Pages (Selenium, Playwright)
  • API’s (Bruno, SoapUI)
  • Database or file manipulation
  • Shell returns
  • Graphic interfaces (Appium, Oculix)

What a tester should learn

• Basic syntax:
  • Classes and Objects
  • Data types and Collections (List, Set, Map)
  • Methods (public, static, private)
  • Exceptions and Errors
  • Constructors and parameters
  • Inheritance, Interfaces and Generics
• Basic configuration
  • Installation
  • IDEs test configuration
• Junit (runs all tests from other frameworks)
  • Annotations
  • Test collection and test suits
• Some other automation framework (by type of software or test )

Generic testing tools

• Test Case generation 🌐

• webdrivermanager 🌐(Web Testing)

Language specific tools

Java

• JUnit (unit, runner)

• Arquillian (integration)

• Hoverfly 🌐 (api)

• Oculix (Previous called Sikuli) 🌐 (UI)

• ArchUnit 🌐 (architecture testing)

• Maven Build Scanner 🌐 (dependencies)

Kotlin

• Kotest

Resources

Courses

• Java for Noobs🆓

• Data Structures in Java for Noobs🆓

• Java Programming Basics🆓

Books

• Head First Java: A Brain-Friendly Guide