http://serverarekore.blogspot.com/2020/04/ubuntu-desktop-2004robocode.html

javaが動作する前提

sudo mkdir -p /opt/robocode
cd /opt/robocode
sudo wget 'https://sourceforge.net/projects/robocode/files/robocode/1.9.3.9/robocode-1.9.3.9-setup.jar'
sudo jar xvf robocode-1.9.3.9-setup.jar
sudo chmod +x /opt/robocode/robocode.sh
cat << EOF | sudo tee /usr/share/applications/robocode.desktop
[Desktop Entry]
Type=Application
Version=1.0
Name=Robocode
GenericName=Tank AI programming game for Java and .NET
Comment=Build the best - destroy the rest!
Icon=/opt/robocode/desktop/robocode.png
Exec=/opt/robocode/robocode.sh
Categories=Game;StrategyGame;
EOF