Building a Plugin (Microkernel) Architecture in Java

Ever been asked to add "just one more custom rule" to your application, only to watch your elegant logic turn into a massive, fragile switch statement? We’ve all been there. When your core system needs to stay stable but your feature set needs to grow indefinitely, it's time to reach for the Microkernel Architecture Pattern (often called the Plug-in Architecture). I recently implemented this pattern for the iluwatar/java-design-patterns repository. Here is a breakdown of how it works, where it