I am trying to detect whether the 'a' was entered as the first string argument. More on stackoverflow.com

Go to Run -> Edit Configurations... and look at your run configuration. There is a field for "Program arguments". More on reddit.com

If you'd like the user to be able to provide different "options" to your program, you can use command-line arguments. For example: Perhaps your program has different "modes" of some kind Perhaps your program reads from a file, and you'd like to be able to pass in different filenames You could also prompt the user for input once the program is running, but sometimes this is not convenient. More on reddit.com

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