revised: 9/26/98, 7/30/99, 01/17/00, 06/01/00, 01/16/06, 06/19/14, 07/15/17

CHAPTER 12 — Input and Output

This chapter discusses input and output. Most programs input data, process it, and then output the results. This chapter discusses ways to input data from the keyboard and output results to the monitor. Later chapters will discuss input and output from disk files and other media.

Input and Output Streams
The standard I/O streams
Scanner class
Converting character data to type int

QUESTION 1:

When a computer program does an input operation, in which direction does the data flow?

From an outside device into the program?
From the program out to some device?