Exception handling

[rso1]

I would generally just pass on IOExceptions rather than catch them and
convert them into a system output. In my case this was a problem, since I
wanted to display a messagebox rather than having an system output.

[ojhernandezcepeda]

When i run the Prova.java, this happens:
--- exec-maven-plugin:1.2.1:exec (default-cli) @ graphviz-java-api ---
digraph G {
A -> B;
A -> C;
}

Error: I/O error while writing the dot source to temp file!

Does anyone know how to repair it or why does this happen?