Installed both Eclipse and the Google Plugin for Eclipse, but the latter wasn't working properly and I couldn't see any of the Google project types or features when running Eclipse.
I found some pages on stackoverflow which talked about creating a little shell script to start Eclipse, but then found a simpler instruction to edit the ~/.profile and change the JAVA_HOME variable - old skool 'nix - love it!
I used a terminal and did vi ~/.profile
...to add export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.xxx.jdk/Contents/Home
export JRE_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.xxx.jdk/Contents/Home
export JRE_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.xxx.jdk/Contents/Home
Help > ... Show Configuration shows that Eclipse is indeed running the new JDK and the Google plugin items all come up just fine. Happy days.
On to the GWT tutorial now - what could possibly go wrong!
(Edit - also seem to have to identify the 1.7 JRE/JDK to Eclipse and then use them in the project BEFORE creating the project - that's what went wrong.)
(Edit - also seem to have to identify the 1.7 JRE/JDK to Eclipse and then use them in the project BEFORE creating the project - that's what went wrong.)