Liskov Substitution Principle in Object Oriented Design | SOLID Principles

[@SaiPrakash16]

Very well explained.

[@kapilgoyal7808]

Good Explanation with Visual

[@ThinkXAcademy]

thanks😄like and share

[@tejaswigutta9017]

Can you also please explain how will you solve the shape,circle,square and rectangle problem ¿
Great and clear explanation @ThinkX Academy

[@ThinkXAcademy]

The answer to this lies in next video of this course i.e. Interface Segregation (hint: Encapsulate what varies)

[@tejaswigutta9017]

@@ThinkXAcademy is this how we do it¿
interface Shape{
void area();
}
Class Rectangle implements Shape{
int length;
int breadth;
Rectangle(int l,int b){
length =l,
breadth=b;
}
@override
void area(){
System.out.println(length*breadth);
}
}
Class Square implements Shape{
int area;
Square(int a){
area=a;
}
@override
void area(){
System.out.println(area*area);
}
}

[@ThinkXAcademy]

Correct now area() is not coupled with shape class and every subclass has its own implementation. This concept is loose coupling.

[@tejaswigutta9017]

@@ThinkXAcademy Shape is an interface in my code and not a class.
As per my understanding the two classes rectangle and square are loosely coupled and shape is an interface.
Please correct me if I'm wrong

[@ThinkXAcademy]

You can make shape a class then only inheritance is possible and create an interface calculateArea.

[@BAPPI_SWE]

very good teaching approach🪅♥