import java.util.Scanner;
import java.util.InputMismatchException;
/**
 * CS151 Fall 2007 in class exericse (11/30). <BR>
 * Keeps trying to read a user entered input from the terminal until a valid
 * integer is entered.
 * 
 * @author Scott Russell 
 * @version 11/30/2007
 */
public class GetInt
{
	public static void main(String[] args)
	{
	    int number = 0;
	    
	    // used to decide when we are finished
	    boolean validNumber = false;
	    
	    Scanner console = new Scanner(System.in);
	    
	    // keep asking for a integer, try to read, catch an error and repeat
	    // until valid integer entered
	    while (!validNumber)
	    {
	        try
	        {
    	        System.out.print("Please enter an integer (e.g. 6, -5): ");
    	        number = console.nextInt();
    	        validNumber = true;
    	        System.out.println("You entered " + number);
            }
            catch(InputMismatchException exception)
            {
                // throw away the bad input so we can read the new input
    	        console.nextLine();
            }
        }
    }
	   
}