Using Java in the Gadget specification xml instead of javascript

How do I develop apps that run on Orku开发者_C百科t.com using the OpenSocial java client libraries? I have read the OpenSocial tutorial for Orkut, and am running the simple tutorial app on Orkut. Now I want to use Java in the Gadget Specification XML file. Is there some sample code or tutorial out there that explains this?

Gadgets for Orkut can't be written in Java, only HTML, Javascript, and css.

You could try implementing your gadget in GWT which is written in Java but then cross compiled into Javascript, Html, and CSS. Here are a couple of pointers that may be useful:

• http://www.slideshare.net/dgirard/javapolis-gwt-gadget-opensocial
• http://knol.google.com/k/building-an-opensocial-gadget-with-gwt-hosting-on-google-code-and-putting-on#

You can have your servlets/jsp`s on your server and access them in the app through JSON and render them in your app!