> I am trying to create dynamic images in a JSP.

Can't do it.  JSPs write character data, not binary data.

Also, your code sample tries to write an image to a file then have the
JSP return an <img> tag to the file.  This opens lots of concurrency
issues.  Think about what happens when two clients hit the JSP at the
same time; the file may be served half-completed.

-jh-

--
Jason Hunter
[EMAIL PROTECTED]
Book:    http://www.servlets.com/book
2.0 to 2.1: http://www.javaworld.com/jw-12-1998/jw-12-servletapi.html
2.1 to 2.2: http://www.javaworld.com/jw-10-1999/jw-10-servletapi.html

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