JAVA Programming, For Beginners, Learn Coding Fast! by Yao Ray

Author:Yao, Ray [Yao, Ray]
Language: eng
Format: epub
Publisher: Ray Yao 's eBooks & Books
Published: 2020-03-21T16:00:00+00:00

Chapter 6

Inheritance & Modifiers

Inheritance

A class can be extended by a subclass.

class sub-class extends parent-class;

“extends” is used in a sub class extends a parent class.

Example 6.1

class parent_class{ // parent class

// define variable here;

// define method here;

}

class sub_class extends parent_class{ // sub class

// define variable here;

// define method here;

}

Explanation:

“class sub_class extends parent_class” means that a sub class extends a parent class (also called super class).

Sub class can access the variable and method in the parent class, but cannot access the private variable and private method in the parent class.

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