The simplest possible Java program consists of 1 class, 1 method, and 1 statement.
/** * Simple program example: * This is the simplest type of class that produces output. * It has 1 class, with a single method that has a single statement. * * @author Ann Instructor, 1 January 2016 */ public class VerySimpleProgram { /** The main function initiates execution of this program. */ public static void main() { System.out.println ("Hello, world!"); } }