The following text was written to the standard output stream when the ExpressionsThing.java program was executed from IntelliJ.
C:\Users\Matthew\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\192.6817.14\jbr\bin\java.exe -javaagent:C:\Users\Matthew\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\192.6817.14\lib\idea_rt.jar=59539:C:\Users\Matthew\AppData\Local\JetBrains\Toolbox\apps\IDEA-U\ch-0\192.6817.14\bin -Dfile.encoding=UTF-8 -classpath C:\Users\Matthew\IdeaProjects\untitled4\out\production\untitled4;C:\Users\Matthew\Desktop\jfugue-4.0.3-with-musicxml.jar;C:\Users\Matthew\Desktop\SimpleComposer.jar;C:\Users\Matthew\Desktop\SimplePainter.jar shapes.ShapesThing
square =
area of square = 160000.0
diagonal of square = 565.685424949238
perimeter of square
disk =
area of disk =125663.70614359173
perimeter of disk = 1256.6370614359173
diamond =
Area of diamond =80000.0
Process finished with exit code 0