🚀 Java Annotations - Practice Level 1

📌 Introduction

Java annotations provide metadata about the code and help in various scenarios like overriding methods, suppressing warnings, and more. This practice focuses on understanding how Java annotations work.

📋 Exercises

🔹 Exercise 1: Hierarchy of Workers

Create a hierarchy of objects with three classes: Worker, OnlineWorker, and OnSiteWorker.

• The Worker class should have attributes name, surname, hourlyRate, and a method calculateSalary() that takes the number of hours worked as a parameter and returns the salary.
• The subclasses should override calculateSalary(), using the @Override annotation.
• In the main() method of the Principal class, make the necessary calls to demonstrate the functionality of @Override.

🏢 OnSite Workers

• Their calculateSalary() method will take the number of hours worked per month as a parameter.
• Salary calculation: (hoursWorked * hourlyRate) + gasolineBonus.
• gasolineBonus should be a static attribute in this class.

💻 Online Workers

• Their calculateSalary() method will also take the number of hours worked per month as a parameter.
• Salary calculation: (hoursWorked * hourlyRate) + internetFlatRate.
• internetFlatRate should be a constant in OnlineWorker.

🔹 Exercise 2: Deprecated Methods

• Add some deprecated methods to the subclasses and use the @Deprecated annotation.
• From an external class, invoke these deprecated methods while suppressing warnings using the appropriate annotation.

🎯 Objectives

• Learn how Java annotations work.
• Understand the use of @Override in method overriding.
• Apply @Deprecated to mark outdated methods.
• Use annotations to suppress warnings when needed.

🛠 Project Details

• Java Version: Jbr17

• IDE: IntelliJ IDEA (Recommended, but any IDE can be used)

• Can also be run from the console using appropriate commands

  📝 Clone the repository

  • Repository: 🔗 GitHub - S107Annotations

Happy coding! 🚀