It violates encapsulation. You shouldn’t be able to bypass the parent class’s behaviour. It makes sense to sometimes be able to bypass your own class’s behaviour (particularly from within the same method) but not your parent’s. For example, suppose we have a base “collection of items”, a subclass representing “a collection of red items” and … Read more
In line with the other answers, there are multiple ways to call super class methods (including the constructor), however in Python-3.x the process has been simplified: Python-3.x class A(object): def __init__(self): print(“world”) class B(A): def __init__(self): print(“hello”) super().__init__() Python-2.x In python 2.x, you have to call the slightly more verbose version super(<containing classname>, self), which … Read more
Eclipse is defaulting to Java 1.5 and you have classes implementing interface methods (which in Java 1.6 can be annotated with @Override, but in Java 1.5 can only be applied to methods overriding a superclass method). Go to your project/IDE preferences and set the Java compiler level to 1.6 and also make sure you select … Read more