Eclipse Luna with Google plugin requires JDK 7

I installed the google plugin (4.4) for eclipse luna but no google icons appeared in the toolbar and no options for google were in the preferences.

Looking at the log file in workspace/.metatdata/ .log it reports that JDK 7 is required.

I added -vm {path to jdk7} and all is good.

To use an old GWT version before 2.5 you will need a gwt-codeserver.jar file in the GWT directory to fool the plugin (found the hint here)