Delphi interview questions

1. What's the difference between parent and owner ?

2. What's class ?

3. Describe different concepts of oops in delphi ?

4. What's circular reference ?

5. What's the structure of a Delphi unit file ?

6. What's dll and how it can be implemented ?

7. What's overloading in Delphi ?

8. What's overriding in Delphi ?

9. What do you meant by reintroduce in delphi ?

10. What's pChar type ?

11. How an ADO connection can be established ?

12. Explain Inheritance with an example ?

13. How polymorphism can be achieved in Delphi ?

14. How to implement custom sorting in TStringList ?

15. What's the difference between TList and TObjectList ?

16. How a button can be created dynamically ?

17. What's the difference between static and dynamic loading of dlls ? How this can be implemented ?

18. What's the difference between virtual and dynamic methods ?

19. What's abstract method in Delphi ?

20. What's RTTI ?

21. Say the VCL heirarchy ?

22. What's procedural data types ?

23. What's called method hooking ?

24. For what purpose the procedure FreeAndNil is used and what's the difference between FreeAndNil and Free method ?

25. How exceptions are handled in Delphi ?

26. What's the difference between Try ...Except and Try...Finally ?

27. How to open a Text file in Delphi ?

28. What's the use of Assigned method in Delphi ?

29. What are the different access specifiers available in Delphi ?

30. What's the difference between public and protected specifier ?

31. How to register a component ?

32. What's an interface in Delphi ?

33. Is multiple inheritance available in Delphi ? How it can be implemented ?

34. What's the difference between Form and Frame ?

35. What are the global classes available in Delphi ?

36. What's the Sharemem unit used for ?

37. What are packages in Delphi?

38. Explain about DPR?

39. Describe about help file in Delphi?

40. Explain about Delphi`s VCL?

41. Explain about event handler?

42. How application server is different from other type of servers?

43. Explain about creating n tired applications using Delphi?

44. How to save images to a database with Delphi?

45. How to save binary files in Delphi?


Expect more ...