Eclipse 3 2 2 updating
This usually indicates that the editor's class name was mistyped in installation details then on the Installed Software tab, select the plugins you want to uninstall and click Uninstall.Now, read the license agreement and if you accept, select the accept radio button and click Finish.
Never perform any upgrade (to any equipment, not just ours) close to any deadline, performance, tour or important show. Note that reconfiguration will usually be required.
Tip: Li Clipse (which is mostly a Py Dev standalone plus some goodies) is pre-configured so that none of the hassle of installing Py Dev into Eclipse nor any pre-requisite is needed ;) configuration check if it's actually using the Java 8 version you pointed at.
If it didn't get it automatically, follow the instructions from: add the -vm argument to on "Specifying the JVM" to specify the Java 8 vm.
In that case, you can try using a direct URL for the download (all the URLs are actually redirects to the final location).
Currently, those redirects point to links on so, you can visit the related update site page (such as in a browser and see to where it's being redirected (you may want to try that direct link with http or https to see if it makes a difference in your use case).