You can deploy to appengine like so:
$ mvn appengine:update
You can then see this, for example, at: http://murraycgwtpexample.appspot.com/ ,
Or: http://yourprojectid.appspot.com/ where yourprojectid is the project ID that you registered at https://console.cloud.google.com/ and which is specified in your appengine-web.xml file, like so: yourprojectid
MurraycGwtpExampleConstants.java is generated from MurraycGwtpExampleConstants.properties .
You can do this manually like so: $ mvn gwt:i18n