Image deletion won't display in browser

Hey everyone, simplly put I am displaying a picture I have created to the user, after it is displayed I wish to delete it from my drive, the only problem is that the image is deleted before it is displayed, i want it the other way round.
I have created a servlet program which creates the image and sends it to a jsp page where it is displayed. After the code that displays the image executes I create a class where I delete the file. In a perfect world the image would still be displayed in the browser as the file is deleted behind the scenes but in this case the code to delete it deletes it before it is displayed, I have tried a few things including putting the thread to sleep for a few seconds and then deleteing the file, all to no avail. Any ideas?
thanks

Putting the servlet to sleep won't help.
The request for the image is made seperately to the servlet call.
The browser can only request the image once it has received the html page.
Obviously it needs time to receive the html page, send a request back for the image, and then have time to download it before you delete it.
I think the best method would be to schedule a process that deletes image files from a directory (for example) every five minutes (based on their timestamp of file.lastModified() so you don't delete any current ones)
Good luck,
evnafets

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