A program inputs its data from the standard input device by calling Java’s System.in.read() method. Look in the SDK documentation and you’ll discover a class called System .

The easiest way to garner user input in a Java program is to use the System’s Console class. Introduced in Java 6, ... To use the Java Console class for both input and output, replace all the ...

Java programs without a graphical user interface use a computer's command line to interact with the user. It is vital that the program's command line output is properly formatted and spaced so ...

But if your program needs to take command-line input from the user in the form of a String, Java’s Scanner class provides all of the methods you will need. Java user input and output strategies Here’s ...