sudo apt update
sudo apt install openjdk-8-jdk
sudo apt install openjdk-11-jdk-headless
sudo update-alternatives --config java
Install Technic
Create Folder Called Technic
Add TechnicLauncher.jar to the folder called Technic
how to create a shortcut for the .jar file
java -jar //home/Name/Technic/TechnicLauncher.jar