Object-Orientation AbusersAll these smells are incomplete or incorrect application of
object-oriented programming principles.Switch Statements
You have a complex switch operator or sequence of if statements.Temporary Field
Temporary fields get their values (and thus are needed by objects) only
under certain circumstances. Outside of these circumstances, they’re
empty.Refused Bequest
If a subclass uses only some of the methods and properties inherited
from its parents, the hierarchy is off-kilter. The unneeded methods may
simply go unused or be redefined and give off exceptions.Alternative Classes with Different
Interfaces
Two classes perform identical functions but have different method names.