Specifying JRE with java command in ubuntu

[overtone]

So this ones pretty straightforward.

I have both open jre and sun jre on this machine.

When im calling a java command from the terminal, how do i specify which one to use?

eg java -jar executablejar.jar would run the jar file with open JDK.

[hasardeur]

Try:

sudo update-alternatives --config java

Here is a very good reference:

http://ubuntuforums.org/showthread.php?t=1517979