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Frage		Antworten
Inheritance goes from generalised to specialised. t/f? Lernen beginnen		True
Describe inheritance using the is-a relationship concept Lernen beginnen		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 Lernen beginnen		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? Lernen beginnen		yes eg:, a dog is-a mammal and it has-a leg/s
What does a subclass constructor look like Lernen beginnen		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? Lernen beginnen		No, private variables and methods are not inherited.
what is the word super used for? Lernen beginnen		to refer hidden variables and overridden methods of the superclass
When can a subclass directly access super class members Lernen beginnen		if they are declared publoc protected or default and are in the same package
does a subclass inherit data fields automatically? Lernen beginnen		yes

Week 5 Hierarchy, Inheritance, Superclasses and Subclasses