In prior Java 101 articles, I referred to the concepts of redirection, standard input device, and standard output device. To demonstrate inputting data, several examples called System.in.read().

Learn about inputs and outputs with this KS2 primary computing guide from BBC Bitesize for years 5 and 6.

Once you do so, you’ll see a listing of all of your Mac’s input and output devices. You can then easily switch between those devices with a mere mouse click.