Java Bean Bag

🚀 Introduction Raise your hand if you've ever been attacked by this monster: java.lang.NullPointerException: Cannot invoke "getName()" because "user" is null We’ve all been there. You think your code is clean... But null is silently hiding, waiting to crash your app. 💣 So, Java 8 gave us a gift: 🎁 Optional<T> — A smart wrapper to help us handle missing values without crashing the app. Let’s understand this with simple words, diagrams, examples, and yes — a few fun moments! 😄