// GetNumber.java
// Shows a way to get a number from the user, while verifying
// that the user enters a number within a specified range.
// cmc, 10/21/08

import java.util.Scanner; // for user input

public class GetNumber {
    public static void main(String[] args) {

        // define the allowable range for input values
        final int MIN = 1, MAX = 10;

        // create Scanner object associated with standard input
        Scanner input = new Scanner(System.in);

        // begin a loop that will make sure user enters a proper value
        int value = MIN - 1;
        while (value < MIN || value > MAX) {

            // prompt the user to enter a value in allowable range
            System.out.printf("Enter integer between %d and %d:%n", MIN, MAX);

            // verify the user is entering an int
            if ( input.hasNextInt() ) {

                // true means an int has been entered, so read it as int
                value = input.nextInt();

                // print an error message if the value is out of range
                if (value < MIN || value > MAX)
                    System.out.println("value is out of range: " + value);

            }
            else { // user did not enter an int

                // must read the non-int as a String to get it out of the way,
                // and might as well print it out with an error message
                String junk = input.next();
                System.out.println("input is not an int: " + junk);
            }

        }

        // made it out of the while loop, so user entered a proper value
        System.out.println("Good job! You entered: " + value);
    }
}