title: Best practice for class field having different values in subclasses
body: <p>I have some abstract class, in one of its method I use a string field which is supposed to be specific to the subclasses. I wonder what is the bect practice to implemnet this? via field and setting the field value in a consructors of the subclasses? via a static field and changing the value in every subclass?</p>
  
  <p>What would you suggest?</p>