It seems there is no equivalent of Python App Engine's _ah/admin for the Java implementation of Google App Engine.
Is there a manual way I can browse the datastore? Where are the files to be found on my machine? (I am using the App Engine plugin with Eclipse on OS X).
http://googleappengine.blogspot.com/2009/07/google-app-engine-for-java-sdk-122.html: "At long last, the dev appserver has a data viewer. Start your app locally and point your browser to http://localhost:8888/_ah/admin
http://localhost:8000/datastore
* to check it out."
* as of 1.7.7