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Question		Answer
Inheritance goes from generalised to specialised. t/f? start learning		True
Describe inheritance using the is-a relationship concept start learning		means that one class is a subclass of another. For example, a dog is a mammal, in other words a Dog class is a subclass of Mammals class.
descri aggregation using the has-a relationship concept start learning		a dog has a leg (usually more than one). If in class Dog we declare a member variable of type Leg (another class) we don’t have inheritance, we have a has-a relationship (aggregation).
can we combine is-a and has-a relationships? start learning		yes eg:, a dog is-a mammal and it has-a leg/s
What does a subclass constructor look like start learning		public class Dog extends Mammals {private Leg [] legs; /* Leg is a class and legs is an array of objects of this type */ ...}
Does a subclass inherit all members of its parent class and predecesorclasses? start learning		No, private variables and methods are not inherited.
what is the word super used for? start learning		to refer hidden variables and overridden methods of the superclass
When can a subclass directly access super class members start learning		if they are declared publoc protected or default and are in the same package
does a subclass inherit data fields automatically? start learning		yes

Week 5 Hierarchy, Inheritance, Superclasses and Subclasses