how to download binary file in jsp

Hi i am trying to download binary file by a jsp file but it is showing the content (not all) on the browser. I want to save that file automatically to the client machine in a specified location. Please help.

JSPs aren't meant for streaming binary content (and for all practical purposes, they can't). Use a servlet instead.

then how to do it by servlet. please let me know... Give one sample code.

An example can be found under "Simple Stream" in the Code Barn.

Originally posted by Ulf Dittmer:
An example can be found under "Simple Stream" in the Code Barn.

How do we render the images, if i try to invoke the servlet directly it gives:"The following image files are located under the WEB-INF directory and, thus, can not be seen with a browser unless streamed through the StreamServlet: "

Exactly what that says. Any resources under WEB-INF are not directly accessible by URL.

Originally posted by Bear Bibeault:
Exactly what that says. Any resources under WEB-INF are not directly accessible by URL.

Does that mean this example is just to show how to disallow stream of an image as compared to 'how to show a stream through a servlet?'

The example shows how to stream a resource through a servlet. This is useful for not only controlling access to resources hidden under WEB-INF from direct access, but for controlling the response headers so that the download acts in ways that you want.