Unsupported major.minor version 51.0 while running play framework

Question

I know there is version conflict. Just want someone to tell me how to resolve it. In previous stackoverflow post no one tells the solution.

Versions: Ubuntu: 12.04.1 LTS

Answer 1

On Ubuntu to change Java version for both compiling and running you need to call:

sudo update-alternatives --config javac 

and

sudo update-alternatives --config java