The following text was written to the standard output stream when the ? program was executed from IntelliJ.
/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -javaagent:/opt/intellij-idea-community/lib/idea_rt.jar=42375:/opt/intellij-idea-community/bin -Dfile.encoding=UTF-8 -classpath /home/gbrecken/IdeaProjects/CS1/out/production/CS1:/home/gbrecken/Downloads/jfugue-4.0.3-with-musicxml.jar:/home/gbrecken/Downloads/SimpleComposer.jar:/home/gbrecken/Downloads/SimplePainter.jar shapes.ShapesThing square = <"Square": side=400.0> area of square = 160000.0 perimeter of square = 1600.0 diagonal of square = 565.685424949238 disk = <"Circle": radius=200.0> area of disk = 125663.70614359173 perimeter of disk = 1256.6370614359173 diamond = <"Square": side=282.842712474619> Process finished with exit code 0