How to browse local Java App Engine datastore?

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).

What is Java Datastore?

Datastore is a NoSQL database that lets us store and load data using Java code.

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