Low-Level Design Interview (Java)

Master the "Machine Coding" round by writing clean, extensible, and thread-safe Java code. We’ll tackle real-world problems like a Parking Lot, Movie Booking System, or Elevator Design.

We will focus on:

1. SOLID Principles: Moving beyond theory to practical implementation.
2. Design Patterns: Proper use of Strategy, Factory, Observer, and Singleton.
3. Java Best Practices: Leveraging Interfaces, Enums, and Collections correctly.
4. Concurrency: Handling thread safety in a multi-threaded environment.

Outcome: Learn to produce a working, modular solution within a 90-minute time constraint.