Apache server restsrting problem

Actually i struct at one place in my coding, i need your help in that. Actually, i made two button on one jsp page for ON and OFF. And two other programs for ON and OFF. So, whenever user hit On button, servlet program for ON will run and switch ON the device attached to that sensor. But when i am hitting the other button i.e OFF it doesnt work. And if we restart the apache server then it starts working. Means, to make other button workable i have to restart the apache server, which should not happen, both button should work without restarting the server. I dont know what to do. Can any one help me , what to do to solve this problem.

Uhm. you might want to line-out your text, it's hard to read.
But what i get out of this is:
You have a jsp page.
You have 2 buttons(on and off).
The button On will trigger the servlet for the On button? or will it just trigger a servlet which belongs to the page?
and switch On a device? attached to that sensor?-- What device? and what sensor? Do you turn it on in your code? etc.--
And is the "Off" button attached to something or not?(a servlet or what ever).