code 66.txt

/*
Program: 	Array - enter values - another one 
Programmer:	J.Sookha
Description:	Once again - reading values into an array and if the 
		data type is not correct - how can we handle this? 
		how do we deal with the error?  
*/

package validateinput;

import java.util.Scanner;

public class ValidateInput 
{
    int[] intNumbers = new int[10]; 
    int intCounter; 

    public static void main(String[] args) 
    {
       validatePositiveNumber();
    }

    private void validatePositiveNumber() 
    {
       Scanner sc = new Scanner(System.in);

       int number;
       do 
       {
          System.out.print("Please enter a positive number: ");
          while (!scanner.hasNextInt()) 
	  {
             String strInput = scanner.next();
             System.out.println(String.format("\"%s\" is not a valid number.\n", strInput));
          }
          number = scanner.nextInt();
        } while (number < 0);

        System.out.printf("You have entered a positive number %d.\n", number);
    }

    private void validateLetter() {
    String secretWord = "Hello";
    Scanner scanner = new Scanner(System.in);

    int length = 0;
    StringBuilder guess = new StringBuilder();
    do {
        System.out.print("Enter a letter to guess: ");
        char letter = scanner.next().charAt(0);
        if (Character.isLetter(letter)) {
            guess.append(letter);
            length++;
        }
    } while (length < secretWord.length());

    if (secretWord.equalsIgnoreCase(guess.toString())) {
        System.out.println("You are correct!");
    } else {
        System.out.println("Please try again!");
    }
}
}

/*
Please enter a positive number: qwerty
"qwerty" is not a valid number.
@@@
"@@@" is not a valid number.
-100
Please enter a positive number: 99
You have entered a positive number 99.
*/