Calling an overridable method from a constructor could result in failures or strange behaviors when instantiating a subclass which overrides the method.


For example:

* The subclass class constructor starts by contract by calling the parent class constructor.
* The parent class constructor calls the method, which has been overridden in the child class.
* If the behavior of the child class method depends on fields that are initialized in the child class constructor, unexpected behavior (like a ``++NullPointerException++``) can result, because the fields aren't initialized yet.
