To run this in Ubuntu 20.04, cd to the directory where you downloaded the JAR file, then run:
java -jar SliceAndDiceFull-1-0-3.jar
Slice & Dice requires the JRE (Java Run-Time Environment, which you can install with this command:
sudo apt install default-jre
SIice & Dice also requires version 8 of the JDK, which you can get with this command:
sudo apt install openjdk-8-jdk
If you have another version of the JDK already installed, Slice & Dice still won't run. Use this command to choose JDK version 8 instead of the other verison.
sudo update-alternatives --config java
I haven't tested any other Linux versions.