AP CSA Chapter 7 Flashcards

8688419555	Polymorphism	ability of a reference variable to refer to different types of objects bound at different times	0
8688419556	Polymorphic reference	reference variable that can refer to different object types at different times (usable on abstract classes)	1
8688419571	Override	when the subclass changes the superclass's definition in an inherited method	2
8688419574	Sibling	subclasses that are similar and are of the same superclass	3
8688419585	Inheritance	when a new class is created from an existing class (ONLY occurs between classes)	4
8688419586	Software reuse	using existing software to make new programs	5
8688419587	Parent class (superclass or base class)	existing class that creates a new class (inherited variables and methods are used as if they are locally declared)	6
8688419588	Child class (subclass or derived class)	new class that inherits definitions of the existing class (are always more specific than existing classes)	7
8688419589	extends	reserved word that indicates a subclass is created from an superclass	8
8688419595	super	reserved word that is used to refer to the superclass and invokes the superclass's constructor only from the subclass's constructor (first line of the constructor is the super reference)	9
8688419596	Single inheritance	only one superclass exists	10
8688419597	Multiple inheritance	multiple superclasses exists	11