Why try to avoid compile time polymorphism at software Development ??

Question

Why the developer do this in java?

Answer 1

Read more on Object Oriented Programming. Polymorphism is a deep and complex concept

Answer 2

Read about control structures and recurcusion. These two concepts are intertwined

Answer 3

Why trying to avoid it? It is very useful in programming. Read this lesson for more!
https://beginnersbook.com/2013/04/runtime-compile-time-polymorphism/