The following text was written to the standard output stream when the NumberSet.java 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=45877:/opt/intellij-idea-community/bin -Dfile.encoding=UTF-8 -classpath /home/dreitz/IdeaProjects/CS1/out/production/CS1:/home/dreitz/Desktop/SimplePainter.jar:/home/dreitz/Desktop/SimpleComposer.jar:/home/dreitz/Desktop/jfugue-4.0.3-with-musicxml.jar arrayplay.NumberList >>> PRINT FIRST 1 >>> PRINT LAST 110 >>> PRINT 3 22 >>> PRINT 8 77 >>> SWAP 5 7 >>> DISPLAY 1 11 22 33 66 55 44 77 88 99 110 >>> SWAP 1 6 >>> DISPLAY 55 11 22 33 66 1 44 77 88 99 110 >>> HELP HELP - display a menu of commands DISPLAY - display the list of numbers PRINT - print a number (FIRST;LAST;nth) SWAP - exchange two elements (nth;mth) ADD - add a number to the list (FIRST;LAST) EXIT - terminate execution of the program >>> ADD 100 FIRST ### invalid operand for add command >>> ### Unrecognizable command: FIRST >>> ADD FIRST 100 >>> ADD LAST 200 >>> DISPLAY 100 55 11 22 33 66 1 44 77 88 99 110 0 200 >>> EXIT Process finished with exit code 0