Factory Method: The Restaurant Kitchen Pattern

Short summary

A beginner-friendly explanation of the Factory Method design pattern using a restaurant kitchen analogy. Instead of copy-pasting if-else object creation logic across 20 files, you centralize instantiation in one factory class behind a shared interface. The payoff: when requirements change (e.g., adding WhatsApp notifications), you touch one place instead of everywhere.

• •Factory Method centralizes object creation behind a shared interface
• •Restaurant kitchen analogy: you order, the kitchen cooks
• •Pattern is about WHERE 'new' lives, not avoiding it
• •Adding new types requires changing only the factory, not callers

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