** Understanding Open-Closed Principle (OCP) for Robust and Adaptable Software Design

The Open-Closed Principle (OCP), one of the five SOLID principles, emphasizes designing software entities that are open for extension but closed for modification. This means adding new functionality without altering existing code. A practical analogy is the Nintendo Wii gaming console's joystick tool.

In a scenario where comparing areas of different shapes is needed, using an interface instead of modifying existing code allows for easy addition of new shapes without disrupting the system. The OCP encourages developers to create robust and adaptable systems by focusing on extending functionality rather than modifying existing code.

A Java library example illustrates this principle in action, demonstrating how design can be refactored to adhere to OCP. By applying these principles, developers can create more maintainable and scalable applications.

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Source: https://dev.to/bappasahabapi/open-closed-principle-ocp-part-2-1po4