39 # Basics of Inheritance in Java # How to Implement inheritance in Java with Programming Example

39 # Basics of Inheritance in Java # How to Implement inheritance in Java with Programming Example


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Inheritance : Introduction
English Meaning
Inheritance
A physical or mental characteristic inherited from your parents.

A Person Inherits some traits
And Develop some his own traits which he learn from books or from Company of people etc.
e.g. You may inherit good height from your parents but your father did not build muscular body by going to Gym which you did in your life.

Important Terms
Class :
Sub Class/Child Class: Subclass is a class which inherits features from other class. It is also called a derived class, extended class, or child class.
Super Class/Parent Class: Superclass is the class from where a subclass inherits the features. It is also called a base class or a parent class.

Java Program Structure
Super class (Parent class ) Definition
class Subclass-name extends Superclass-name(Parent class)
{
//Body of class
}

Advantages of Inheritance
Reduce the Duplicity in Code
Increase Reusability
Increased Reliability
Less Development and Maintenance cost
More Organized code.
Code More Flexible for Change.
Facilitates creation of class libraries.
Disadvantages of Inheritance
Inherited functions work slower than normal function
Inheritance increases the coupling between base class and derived class.
Improper use of inheritance may lead to wrong solutions.
Data members in the base class are left unused.
A change in base class will affect all the child classes.

Next Video
Advantages and Disadvantages of Inheritance
Types of Inheritance
Practical Examples (Programs)



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