Java: Upcasting and Dynamic Dispatch

It enables flexible and reusable code. Frame the concept in practical terms so you can explain it during interview discussion.

Polymorphism allows objects to be treated as instances of their parent class, leading to more flexible and reusable code. This is because you can write code that works with the superclass type and rely on runtime polymorphism to correctly execute subclass methods. For example, an e-commerce application might process different product types using a single `Product` interface, calling `display()` on various product objects without knowing their concrete types.