After upgrading from Linux Mint 17.3 to 18, I found that the minimum Java available was 8. For GWT projects, up to 7 is allowed because there are issues running with Java 8.
So, I deleted Eclipse ready to install the latest. It installed fine. Still some issues along the way with Java 7 and 8 with GWT.
Eventually I installed Oracle Java 7. So far so good.
After finding that there is no longer support for Android in eclipse and installing all the Android stuff I cleared eclipse again. Actually I removed Eclipse a few times until I got Java 7 and 8 and all the GWT web stuff. Including Java EE version of eclipse.
Now I’ve figured out how to run a GWT project straight out of Eclipse without needing to upload onto the Apache server too. This makes for much faster build times. However, one cavaet is that I will have to create a linux group and add my user to the group next so that Tomcat7 and my user can read/write to the servers home directory.
Having sped up the build times, development of GWT projects will be so much easier and less time consuming. I will only need to deploy to the Apache main server when it has all been done. All I need to do is to save all files that I’ve been editing, click refresh in the server pane in Eclipse and go to the page in the browser. The browser will then tell the project to build itself the changes made.
Good stuff for a few hours of headaches.