import cs1.Keyboard;

public class Validate_Input
{
	public static void main (String[] args)
	{
		String userinput = "";
		System.out.print ("Username: ");
		userinput = Keyboard.readString();

		validate_letter(userinput);
		count_letters (userinput);
	}


	public static void validate_letter (String input)
	{
		int totalA=0;

		for (int i=0; i<input.length(); i++)
		{
			if (Character.isLetter(input.charAt(i)))	//-----isLetter
			{
				continue;
			}
			System.out.println ("\nPlease use letters only in USERNAME\n"); break;
		}
	}


	public static void count_letters (String input)
	{
		int total=0;

		for (int i=0; i<input.length(); i++)
		{
			total = total + 1;

			if (total <= 0 || total > 8)
			{
				System.out.println ("\nUSERNAME can have max 8 letters\n"); break;
			}
		}
	}
}