/*
 * CmdLine.java -- A very simple demonstration of how to access any
 * command-line arguments provided when the program was executed.
 * 
 * To compile and execute a Java application from the command line:
 *     $ javac CmdLine.java
 *     $ java CmdLine
 * If the user wants to supply some information for the program to use,
 * without having to wait for the program to prompt for it, the programmer
 * may have made it possible for the user to type the information after
 * the program name on the command * line.  For example:
 *     $ java CmdLine a bouncy "string of stuff"
 * If the code is written to accept info in this manner, it can speed up
 * common functionality for the user.  This isn't as generally useful in
 * Java, given its Internet focus, than in other languages (such as C).
 *
 * UNIX command line utilities use this mechanism frequently.  Example:
 *     $ ls -l
 * For that matter, the string "CmdLine" is actually a command-line
 * argument to Java.
 */

import java.io.*;

public class CmdLine
{
    public static void main (String [] args)
    {
        if (args.length > 0) {
            for (int i=0; i<args.length; i++) {
                System.out.println("args[" + i + "] references the string '"
                                 + args[i] + "'");
            }
        } else {
            System.out.println("Usage: java CmdLine <arguments>");
        }
    }
}