The document discusses the concepts of object-oriented programming (OOP), emphasizing key principles such as information hiding, encapsulation, abstraction, inheritance, polymorphism, and delegation. It highlights the importance of reducing complexity, maintaining small public interfaces, and promoting unit testing. Additionally, it mentions practical applications in LotusScript and concludes with an invitation for questions.

1. simply — OOP — simply Let's talk about concepts .

2. Thomas Bahn [email_address] +49/4307/900-401 assono GmbH http://www.assono.de http://www.assono.de/blog

3. You can use a pocket watch.

4. The manufacturer must know how to build the clock.

5. A concept called information hiding . Reduce complexity by hiding details beneath the surface.

6. This is the power of OOP .

7. Everything is an object . Everything consists of objects.

8. There are many objects. Concurrently . Objects interact .

9. OOP maps real world objects to software objects.

10. A concept called encapsulation . Object = state + behavior + identity

11. „Think of an object as a fancy variable; it stores data, but you can „make requests“ to that object, asking it to do operations on itself.“ Bruce Eckel, Thinking in Java

12. Models of an office chair

13. A concept called abstraction . Reduce complexity by ignoring unnecessary details.

14. This is the power of OOP .

15. A concept called class .

16. Divide and conquer : Software design class for class

17. This is the power of OOP .

18. A concept called inheritance .

19. This is the power of OOP .

20. A concept called polymorphism .

21. Change behavior without changing code.

22. This is the power of OOP .

23. Everyone has his responsibilities . Every object, too.

24. A concept called delegation .

25. This is the power of OOP .

26. Construction and destruction of objects

27. Let's talk about principles . Keep it simple .

28. The public interface of a class is a contract .

29. Make the public interface as small as possible. You can always add later, but never remove , nor modify .

30. Remember: You can always change the private internals .

31. Reduce coupling between objects.

32. Test your classes separately first. A concept called Unit Testing .

33. Let's talk about OOP in LotusScript .

34. Demo of the Watch class.

35. Demo of the Email class.

36. The end Ask questions now — or later Blog: www.assono.de/blog Email: [email_address] Phone: +49/4307/900-401