Java: Synchronized and Locks

To ensure the lock is always released. Frame the concept in practical terms so you can explain it during interview discussion.

In Java, the finally block is used to guarantee that a block of code executes regardless of whether an exception occurs or not. When using ReentrantLock, placing the unlock() call inside a finally block ensures that the lock is released even if an exception is thrown, preventing potential deadlocks. This is crucial in high-concurrency systems like an e-commerce checkout process.