Java Bean Bag

🧪🧠 TDD vs BDD & 🤔 Why Interviewers Ask “Which Design Pattern Are You Using?” Two interview questions that look simple… but silently decide your fate. 😄☕ If you’re a Java / Spring Boot developer and you’ve attended even 2–3 interviews , you’ve definitely heard these questions: ❓ “Are you using TDD or BDD?” ❓ “What design pattern are you using in your project?” And suddenly your brain goes like… 🧠 “Wait… we are just writing code da… what pattern??” Don’t worry. This blog will spoon-feed you the answer 👶🥄 — slowly, clearly, and in an interview-safe way. 🧪 Question 1: TDD vs BDD – What are you really doing? 🤯 Dumb Question: “Both are testing… then why two names?” 💡 Brilliant Answer (Baby Explanation): Think like this 👇 TDD BDD Developer talking to code 🧑‍💻➡️💻 Business talking to system 🧑‍💼➡️🖥️ 🔵 TDD – Test Driven Development 🧪 👶 One-line concept: Write test first ❌, then write code ✔, then clean it 🔄 @Test...

Handling Transactions in Thread-Based Environments (Java + Spring Boot) 🧠 How Do You Handle Transactions in a Thread-Based Environment? (The ultimate fresher-friendly explanation — with jokes, questions & real-life pain 😂) 1️⃣ First — Why This Question Comes in EVERY Interview? Interviewer thinking: “If this candidate can’t handle concurrent transactions, I’ll hire him and later he’ll break my production database.” 😭 You thinking: “Why this fellow always asking this tough question?” 😫 Reality: 👉 In real applications multiple threads hit the system. 👉 Multiple users click at the same time. 👉 If your code is not transaction-safe, DB becomes “Kaboom 💥”. That’s why interviewers ask: “How do you handle transactions in multi-threaded scenarios?” Because they want to check: ✔ Do you understand data consistency? ✔ Do you know why @Transactional exists?...