Inheritance

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Introduction

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.

Related Examples

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Wednesday, August 2, 2017
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