1. Day 4

2. Abstract Class

3. animal

4. mammal

5. abstract methods

6. Abstract Class Vs Interface

7. AC - Stereotype
I - Behavior

8. AC - single
I - multiple

9. Polymorphism

10. Employee
abstract calculateSalary()
Stylist
Administrator
calculateSalary()
calculateSalary()
ArtMaster
calculateSalary()

11. for (Employee e : employees) {
System.out.println(e.getName() + salary: + e.calculateSalary());
}

12. One more thing about inheritance

13. IS - A

14. HAS - A

15. Black Coffee
Black Coffee with sugar
Espresso
Cappuccino
Mochaccino

16. Encapsulation
Inheritance
Polymorphism