Java Bean Bag

🎯 1. Setting the Scene — The Interview Moment Imagine this… Interviewer: “So, how would you handle multiple threads accessing a shared bank account in Java?” Me: “You mean… like multiple ATMs punching the same account balance at the same time?” 🏦💳 Interviewer: smiles like a villain in a heist movie 😈 “Exactly.” 🚨 2. Without Thread Safety — What Happens? Bad Code (Singleton Bean or Shared Object) class BankAccount { private int balance = 1000; // Shared among threads public void deposit(int amount) { balance += amount; // 🚨 Not synchronized System.out.println(Thread.currentThread().getName() + " deposited ₹" + amount + ", Balance: ₹" + balance); } public void withdraw(int amount) { if (balance >= amount) { balance -= amount; // 🚨 Not synchronized System.out.println(Thread.currentThread().getName() + " withdrew ₹" + amount + ", Balance: ...