Why are static variables considered evil?

Question

I am a Java programmer who is new to the corporate world. Recently I\'ve developed an application using Groovy and Java. All through the code I wrote used quite a good numbe

Answer 1

In my opinion it's hardly ever about performance, it's about design. I don't consider the use of static methods wrong as apposed of the use of static variables (but I guess you are actually talking about method calls).

It's simply about how to isolate logic and give it a good place. Sometimes that justifies using static methods of which java.lang.Math is a good example. I think when you name most of your classes XxxUtil or Xxxhelper you'd better reconsider your design.