How to display chart in .jsp page

[Robert M. Gary]

How can I display a dynamic X-Y chart on my web page that changes based
on user input? Is there a way I can return something via a servlet? Are
there any freeware JChart classes that I could push through a servlet?
-Robert

 

[Andrew Thompson]

How can I display a dynamic X-Y chart on my web page that changes based
on user input? Is there a way I can return something via a servlet? Are
there any freeware JChart classes

JFreeChart (for example)

.. that I could push through a servlet?

Into an (J)Applet, yes.

HTH

 

[Roedy Green]

How can I display a dynamic X-Y chart on my web page that changes based
on user input? Is there a way I can return something via a servlet? Are
there any freeware JChart classes that I could push through a servlet?

It might be easier to pump the raw data to an Applet that does the
chart using any of the tools at http://mindprod.com/jgloss/graph.html
You could do that with a DataOutputStream.

The only other way I can think of doing it is to dynamically construct
a png image. That would be a heavy cpu load on the server, and a heavy
load to transmit. see http://mindprod.com/jgloss/imageio.html