Abstraction & Inheritance

[dilroseR]

Abstraction
• Interfaces and Abstract classes

Inheritance
• extends and implements keywords in Java
• Super class and Sub class

i would like to work on these topics
kindly assign it to me

[BaXCruiser]

okay Get started, and please take a look at the PR's that are already merged , you need to do in similar way (.java and .md file)