The following text was written to the standard output stream when the NumberList.java program was executed from IntelliJ.
>>> display 12 20 49 100 125 234 321 368 476 597 666 667 >>> print first 12 >>> print last 667 >>> print 5 125 >>> swap 1 5 >>> display 125 20 49 100 12 234 321 368 476 597 666 667 >>> add last 444 >>> display 125 20 49 100 12 234 321 368 476 597 666 667 444 >>> 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 >>> exit