How to refresh image component JSP?

hi i am using Netbeans 6.01 and developing a web project.
I need to do some manipulation on an image according to input and save the image at address in the project/build/resources/image with the same name when user press a button but sometimes page refreshes the image and sometimes it does not refresh.I don't know what to do
thank you for your interesting and help if u need more details about the problem please just ask me.

I have just discovered something this is not about the code that i wrote
double x=0;
while(x<=1000000000)
x++;
super.init();
init();
i delete this code when i reload page once after that all of my requests works properly.I mean when i press reload button of the browser once then page works and image is resfreshes.
Now i can solve the issue if anybody can tell me how to reload a page when i press a button
i don't wanna use the javascript onclick() window.location.reload().
Edited by: maniacneron on Dec 24, 2008 2:34 PM

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