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().

Professor Hawking used an input device controlled by his cheek movements to choose the words he wanted to use. A special output device turned those words into electronic speech that people could hear.

The ‘w’ in ‘javaw’ indicates that the program will run without access to the Java Console ... Java Console-based user input and output won’t be a problem.

Then, you can see the program output on the display screen. If the program output gets sent to your printer’s FD, the output would be printed. The ‘<’ sign is used for the input or stdin redirection.