I'm using Google Translate API in a java project with Google App Engine.
On my machine, on local, there is no problem with Google Translate. But when I deploy the application, I got this :
"{"error":{"errors":[{"domain":"usageLimits","reason":"accessNotConfigured","message":
"Access Not Configured. Please use Google Developers Console to
activate the API for your project."}],"code":403,"message":
"Access Not Configured.
Please use Google Developers Console to activate the API for your project."}}"
Solve my partially my using external libraries :
https://code.google.com/p/google-api-translate-java/
Hope it's help