Mapa mental
inheritance
Conteúdo do mapa
inheritance
- extending or subclassing declare subclasses final by saying final is-a relationshipparent child classes
distinguishes OOP languages
benefits
- add functionalities to original class
- change behaviors of original class
extend by writing extends after child class name and before parent
ex animals
legal to assign an instance of a subclass to a reference variable of the parent type.
can access public and protected just not private of parent class
override methods from the parent class
when you create a child object, all its parent classes are also instantiated.
you can call the parent’s constructor from a subclass’s constructor by using the super keyword, but super must be the first statement in the constructor.
you can cast an object to another type (Parent)
use if for instanceof
Informações
- Descrição
- Mapa Mental sobre inheritance, criado por Philip Mylet em 06-08-2019.
- Criado por
- Philip Mylet
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