🚀 Day 17 of My Automation Journey – Understanding Abstraction & Final Keyword in Java

Welcome back to Day 17 of My Automation Journey! ☕💻 In the previous days, I explored important Java concepts like: 🔐 Encapsulation 📦 Packages 🔁 Method Overriding 🔑 Access Modifiers Today I learned another very important Object-Oriented Programming concept: ✨ Abstraction I also explored the final keyword and understood how Java statements like: System . out . println (); actually work behind the scenes. Let’s break everything down step by step. 🧩 What is Abstraction? Abstraction means hiding implementation details and showing only essential features to the user. In simple words: 👉 The user only sees what the system does, not how it does it. Real-life Example 🏧 When you use an ATM machine: You click Withdraw Enter amount Cash is dispensed But you don’t see the internal banking logic. That hidden logic is Abstraction. ⚙️ How to Achieve Abstraction in Java We achieve abstraction using the abstract keyword. It can be used in: | Level | Description | | ------------ | ------------------------