Inheritance
suggest changeIntroduction
Inheritance is a basic object oriented feature in which one class acquires and extends upon the properties of another class, using the keyword extends
. For Interfaces and the keyword implements
, see interfaces.
Syntax
- class ClassB extends ClassA {…}
- class ClassB implements InterfaceA {…}
- interface InterfaceB extends InterfaceA {…}
- class ClassB extends ClassA implements InterfaceC, InterfaceD {…}
- abstract class AbstractClassB extends ClassA {…}
- abstract class AbstractClassB extends AbstractClassA {…}
- abstract class AbstractClassB extends ClassA implements InterfaceC, InterfaceD {…}
Remarks
Inheritance is often combined with generics so that the base class has one or more type parameters. See Creating a Generic Class.
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