Important JSP Interview Question with Solution

1. What is JSP?
2. What are the lifecycle of JSP?
3. What is a translation unit?
4. How is JSP used in the MVC model
5. What are context initialization parameters
6. What is a output comment
7. What is a Hidden Comment
8. What is a Expression
9. What is a Declaration
10. What is a Scriptlet
11. What are the implicit objects
12. What is the difference between forward and sendRedirect
13. What are the different scope values for the
14. Why are JSP pages the preferred API for creating a web-based client program
15. Is JSP technology extensible
16. What is difference between custom JSP tags and beans
17. How can I implement a thread-safe JSP page? What are the advantages and Disadvantages of using it?
18. How does JSP handle run-time exceptions
19. How do I prevent the output of my JSP or Servlet pages from being cached by the browser
20. How do I use comments within a JSP page
21. Response has already been commited error. What does it mean
22. How do I use a scriptlet to initialize a newly instantiated bean
23. How can I enable session tracking for JSP pages if the browser has disabled cookies
24. How can I declare methods within my JSP page
25. Is there a way I can set the inactivity lease period on a per-session basis
26. How can I set a cookie and delete a cookie from within a JSP page
27. How does a servlet communicate with a JSP page
28. How do I have the JSP-generated servlet subclass my own custom servlet class, instead of the default
29. How can I prevent the word "null" from appearing in my HTML input text fields when I populate them with a resultset that has null values
30. How can I get to print the stacktrace for an exception occuring within my JSP page
31. How do you pass an InitParameter to a JSP
32. How can my JSP page communicate with an EJB Session Bean
33. Can we implement an interface in a JSP
34. What is the difference between ServletContext and PageContext
35. What is the difference in using request.getRequestDispatcher() and context.getRequestDispatcher()
36. How to pass information from JSP to included JSP
37. What is the difference between directive include and jsp include
38. What is the difference between RequestDispatcher and sendRedirect
39. How do I mix JSP and SSI #include