We must have java installed.
Download the latest version of ArgoUML, you can do so from here.
Open the terminal, extract the file, and move it to /opt, giving permissions to the .sh file in the folder and creating a link:
cd /Descargas
tar xzvf ArgoUML*.tar.gz
sudo mv argouml-0.34 /opt/
sudo chmod 777 /opt/argouml-0.34/argouml.sh
sudo ln -s /opt/argouml-0.34/argouml.sh /usr/bin/argo
Add the application:
sudo gedit /usr/share/applications/argouml.desktop
Adding:
[Desktop Entry] Version=0.34 Name=ArgoUml Comment=UML Exec=argo Icon=/opt/argouml-0.34/icon/argouml2.svg Terminal=false Type=Application Categories=Utility;Application;Development