Inheritance Java Help

Inheritance

Inheritances one of the cornerstones of object-oriented programming because it allow the creation of hierarchical classifications, Using inheritance, you can create a general class that defines traits common 10 a set of related items. This class can then be inherited by other, more specific classes, each adding those things that are unique to it, In the terminology of a is inherited is called a super class. The  class that does the inheriting is called a Therefore, a subclass is a specialized version of a  It inherits all of the instance variables and methods defined by the super class and adds its own, unique elements.

Inheritance Basics

To inherit a class, you simply incorporate the definition of one class into r by . using the extends keyword. To see how, let’s begin with a short example. The following program creates a super class called A and a subclass called B. Notice how the keyword extends is used to create a subclass of A.

Even though A is a super class for n, it is also a completely independent, stand-alone class. Being a super class for a subclass does not mean that the super class cannot be used by itself. Further, a subclass can be a super class for another subclass. The general form of a class declaration that inherits a super class is shown here.

You can only specify one super class for any subclass that you create. lava does not ‘support the inheritance of multiple super classes into a single subclass. This differs from C++, in which you can inherit multiple base classes. You can, as stated, create a hierarchy of inheritance in which a subclass becomes a super class of another subclass. However, no class can be a super class of itself.

JavaHelpOnline.com

  • Feel free to send us an inquiry, we will reply back in hours.
 

Verification

Posted on September 17, 2014 in Inheritance

Share the Story

About the Author

Back to Top
Share This