How to make a web based amortization generator using java

i am new to java any help please, i cannot proceed for two weeks still trying. i am developing web application using netbean 6.5 and mysql database.
i have a table called Payment _schedule.
then first i want to make amortization generator page as a result by selecting
loan period,loan amount,interest,Start date
Loan period could be months or years
then loan table will be displayed.
how can i make this web based amortization using java web application?
my second questions if the first question is solved can i put that into my table? and how?
thanks

1) The codebank is for posting code others may find useful, not posting questions. I've asked the mods to move it.
2) Are you sure Java is what you're looking for? Or did you mean JAvaScript... which is a completely different animal all together.

-tg

As nebroom is talking about net beans I'm going to assume this is more Java related than Java Script although both may play a part.

Threrad moved. It's best keep questions out of the code bank as you're unlikely to get answers in there.