Resolving version conflict between java and javac on Ubuntu

Question

I have a problem with my compiled Java application on Ubuntu. It throws UnsupportedClassVersionError. I am compiling with a higher JDK version than the one that is

Answer 1

You will also need to do:

sudo update-alternatives --config javac

Select the desired java compiler from the list provided. For example on Centos 5

There are 2 programs which provide 'javac'.
Selection    Command
-----------------------------------------------
1           /usr/lib/jvm/java-1.6.0-openjdk/bin/javac
*+ 2        /usr/lib/jvm/java-1.7.0-openjdk/bin/javac