create a Java GUI with a REPL and canvas window

Create a Java GUI that contains a REPL but can also spawn a turtle graphics canvas.

This issue represents the Java version of the the issue in #11, which targets JavaScript.

There is a library for creating a REPL in a Java Swing GUI: https://github.com/alandipert/clj-swingrepl
And Seesaw makes Swing programming actually fun: https://github.com/daveray/seesaw

Creating a JS-targeted REPL as in #11 obviously has more relevance and reach, but having a Java version is better than not having one, all things being equal. At the time of this writing, neither exists, so deployment of clojure-turtle is still a bit 'manual'.

Commencez par lire l’issue JavaScript associée #11 et par examiner les projets liés clj-swingrepl et Seesaw. Définissez l’interaction entre le REPL de la GUI Java et le canevas de la tortue, puis vérifiez que la GUI peut héberger un REPL et lancer le canevas comme décrit.

Rédigé par le modèle d'indexation à partir du texte de l'issue.