"Java provides several ways to perform input and output operations with the standard input/output as part of the System class. The System class contains a standard output stream which can be accessed using System.out . It also has a standard input stream which can be accessed using System.in . For output, there are several methods that can be used but we’ll focus on System.out.println() and System.out.printf() . The first is for printing strings on a single line. The ln at the end indicates that the method will insert an endline character, for you. The second is a printf -style output method that takes placeholders like %d and %f (review Section 2.4.3 for details). The easiest way to read input is through the Scanner class. You can create a new instance of the Scanner class and associate it with the standard input using the following 395"