import java.util.Scanner;
import java.io.IOException;

/**
 PromptForInput01 is a simple example of prompting for input
 in the style of "old school intro courses".    I don't
 advocate this style of programming once students are 
 beyond "training-wheels level examples"--there are better alternatives
 such as getting input from command line args, or reading from files--
 I nevertheless feel obliged to provide an example of how to do it.

@author      Phill Conrad
@version     2010.12.30
@see <a href="http://proquest.safaribooksonline.com/book/programming/java/0596007019/input-and-output/javacook2-chp-10-sect-1">Java Cookbook 2nd edition, Recipe 10.1 (on campus)</a>
@see <a href="http://proquest.safaribooksonline.com.proxy.library.ucsb.edu:2048/book/programming/java/0596007019/input-and-output/javacook2-chp-10-sect-1">(off campus)</a>
*/

public class promptForInput01 {

    /** A main method to illustrate prompting for various kinds of values.
        This method throws <code>IOException</code> to keep the example 
	relatively simple.    The alternative is a try/catch block

     @param args value is ignored
     
     */

    public static void main (String [] args) throws IOException {

	// One way to do this is to use the Scanner class.
   
	Scanner sc = new Scanner(System.in);      // Requires JDK 1.5

	// print a welcome message--note extra \n on second line
	System.out.println("This program will prompt for input");
	System.out.println("just to show it can be done--no other reason.\n");

	// Prompt for an int
	System.out.print("Please enter an integer: ");
	int i = sc.nextInt( );
	int iSquared = i * i;
	System.out.println("You entered: " + i);
	System.out.println("i squared is: " + iSquared + "\n");

	// Prompt for a double
	System.out.print("Please enter a double (floating-pt number): ");
	double d = sc.nextDouble( );
	double dSquared = d * d;
	System.out.println("You entered: " + d);
	System.out.println("d squared is: " + dSquared + "\n");

	// Get rid of the newline you typed after the double
	// If you don't do this, you get "empty" output below (try it)

	String dummy = sc.nextLine();
	
	// Prompt for a string
	System.out.print("Please enter an String: ");
	String stuff = sc.nextLine();
	String stuffUC = stuff.toUpperCase();
	String stuffLC = stuff.toLowerCase();
	System.out.println("You entered: " + stuff);
	System.out.println("In uppercase, that's: " + stuffUC);
	System.out.println("In lowercase, that's: " + stuffLC);
		    
    }


} // class promptForInput01