Did you try setting it in update-alternatives
sudo update-alternatives --config javaws
What java package and version is installed and what version is system set to use (to check: java -version Can you please provide us with a step by step set of instructions on how to reproduce (including a link to a jnlp file.
Did you try setting it in update-alternatives
sudo update-alternatives --config javaws
What java package and version is installed and what version is system set to use (to check: java -version
Can you please provide us with a step by step set of instructions on how to reproduce (including a link to a jnlp file.