Have you tried Zulu (commercial OpenJDK and free software) yet?
I came across some .deb files at http://www.azulsystems.com/products/zulu/downloads#Linux for Zulu, which they claim is 100% open source (free software) and supports OpenJDK 6, 7, and 8.
Since we don't have OpenJDK 8 yet for Trisquel, has anyone tried this yet? Hopefully its as free and open as they claim.
I don't know whether this software is free or nonfree, so I would not install it on my computer. I also checked the link and it seems broken. I dont know if US export regulations make the program non-free.
"You also agree that you will not (and will not allow any third party to) use the Product, or allow the transfer, transmission, export, or re-export of the Product or any portion thereof in violation of any export control laws or regulations administered by the U.S. Commerce Department, OFAC, or any other government agency."
http://www.azulsystems.com/products/zulu/downloads is down for you?
The software is GPL since OpenJDK is copyleft.
OpenJDK 8 is in Utopic, it can be backported to Trusty, and there's a bug for that: https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1341628
I am a member!
So, just one thing: just because it's open source, it doesn't mean it's free software ;]
https://www.gnu.org/philosophy/free-software-for-freedom.html
Umm, its GPL so that makes it both. I also found this testing PPA at https://launchpad.net/~openjdk-r that has OpenJDK 8 builds for Ubuntu 12.04 and 14.04 which are obviously Trisquel 6 and 7.
I know its a testing repo, but the developer (Klose) is one of the guys that manages OpenJDK in the main repos.
Strange name, a bit like calling a piece of software "Scottish" or "Russian".