The Google AppEngine development server simulates Google’s backend database with an embedded database. It creates a file on you local disk that you can delete to clear the DB.
Is there a tool that allows to browse and edit this data, similar to the Data Viewer that you get for deployed applications?
Clarification: I am asking about the Java toolkit, not the Python one.
Finally, data viewer comes with Google App Engine Java SDK version 1.2.2.
It can be accessed at:
http://localhost:8080/_ah/admin
or
http://localhost:8888/_ah/admin
The same link as in Python version.