Need suggestion for a effective web application

Question

Hi all,
I need ur valuable suggestions as how to create a web application effectively. So far I have been doing design,business logic and database operation in JSP itself. I dont want to continue with this. As a beginner i dont want to jump into struts directly without working in java beans and servlets.
When should i use beans and when should i use java classes and when should i use servlets?
Say for eg: I have a JSP page where i get the Employee details like
Employee Name:
Employee ID:
Department: (Drop Down)
Designation: (Drop Down)
Address:
Salary:
At present i have created a jsp page EmployeeDetails.jsp where i have created text box to get input for emp name,id,address and salary.
written db query to fetch existing departments and designations from DB and i have populated it in drop down. Once the user submits the page then the insertion part into DB is done in another jsp, SaveEmpDetails.jsp.
Instead of doing everything in JSP how should i use bean or servlets.
Here where should i use bean and where should i use servlets and java classes?
It would be really helpful if someone help me to move one step forward and create effective web application.
any tutorial or link which gives sample application design would be greatly appreciated.
Thanks,
Thanuja.

Answer 1

ok i checked the links and also few post in this forum.
http://forum.java.sun.com/thread.jspa?threadID=5189695
eg given in the above thread uses jsp,bean and servlet.
I have a doubt. why to use bean in that eg. cant we directly get the value in jsp and pass it to servlet and make db insertion there?
for the employee details scenario should i use bean? or directly pass the parameters to servlet and vise versa.
Thanuja.