2 posts tagged with "solid"

In Parts 1 and 2, we learned what interfaces are and when to use them. Now let's dive deep into the OOP principles that make interfaces essential for large-scale applications. This isn't about avoiding code duplication—it's about fundamental software design.

"Can't we just create a utility class with static methods instead of using interfaces? Isn't the interface approach just fancy?" Great question! Yes, you could use utility classes - but you'd be solving only 50% of the problem. Let's see what happens in practice and why interfaces aren't fancy, they're necessary.