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?

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

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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#

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