Java on App Engine
See App Engine Java Overview. SDK (ref Google):
I downloaded the SDK, unzipped it and added to my PATH.
I used Ant to build the app in demos\guestbook
I then ran the local test-server with command (path from demos dir):
dev_appserver.cmd guestbook\war
I must wait for activation before I can upload app
Groovy on App Engine
I impported the code for the Groovy AppEngine HelloWorld, but that does not run locally due to a bug in the SDK. I commented out the line that tries GroovyShell().evaluate(“3*4”), and it ran, but it seems that Groovlets are based on being able to evaluate scripts.
Next up: get rss from Blogger and delicio.us.