Install PlantUML environment on Mac

PlantUML is a tool to draw UML. It is a tool that you can write a text description to draw your UML diagram.

If you want to use it on your local mac desktop, you can use Homebrew to install that. Before installing PlantUML, make sure that you have installed Java and Graphviz.

Make sure that you have installed Java:

 $ java -version

Install Graphviz

$ brew install graphviz

Now, install PlantUML:

$ brew install plantuml

Let's try a sample.

$ wget https://gist.githubusercontent.com/QuantumGhost/0955a45383a0b6c0bc24f9654b3cb561/raw/08e6eb965a5604a8ba89a586707708a9a9b98c1a/example.puml

The below command will dump to png file

$ plantuml example.puml

The below command will diaplay the latest result

$ plantuml -gui example.puml 

As a side note, you can integrate it with Visual Studio code or sublime editor. If you are using Visual Studio code, I would recommend PlantUML extension which is able to show a live preview.

A sample for planting sequence diagram:
http://plantuml.com/sequence-diagram