Servlet Question / How to keep from displaying until fully loaded?

[Cookie Jar]

If the page hasn't fully loaded and someone presses a form button, I
get an Exception because the data hasn't yet been written completely to
the page before it is displayed.

I'm having this issue crop up on new browsers, such as Firefox.
Before, I never had this problem.

 

[Cookie Jar]

Figured it out .. hadn't done servlets in awhile. But I will note that
in the past my browsers loaded pages very fast, but this new Firefox is
slow. I guess I can be grateful tho since it disclosed a bug in my
software. I needed more error checking.