Eclipse JDK compliance compiler level

Thanks Chej and Objects,

I am building a web application, and of course I want my site can be viewed by most user.
I need to know the advantage and disadvantages if I build my web application using higher Compiler 5.0 or 6.0?

is there any relation with the browser version?
maybe like.. some resources from JDK compiler 6.0 only can be run at ie7/higher or firefox2/higher?
I doubt if there is any relation with the browser compliance, since it is on the server side not client. Please correct me if I am wrong.

I use Tomcat5.5 and soon will upgrade it to Tomcat6.
Is there any relation with this?

Thanks in advance.

It means.. If I use the latest tomcat version and latest java version on my webserver, I can use the latest compiler? is it right?
How can I know that tomcat5.5 or tomcat6 is work with JDK compilier 5.0 or 6.0?

thats correct.
tomcat supports latest java

Thank you for your time in replying my issue. :)

?

ups.. I am very sorry Cehj,
you should have the assisting answer for the issue. thank you.

I should picked the accepted solution and picked which are the assisted answer.
I tried but I cannot go back again.  (will not make the same mistake again..:p)

All above answers helped me a lot.

Thanks.

:-)

ups.. wrong again. :p
cannot choose 2 accepted answer.

I am very sorry for this.. really appreciate all your helps.

Thank you.

Now the accepted answer isn't really applicable to your situation, oh well as long as CEHJ has got his points :)

The accepted answer is an answer to the question posed - that's how the site works

not true sorry :)