public static boolean NumbersOnly()
{
// Variables
String Year;
String Amount;

char Yearchar;
char Amountchar;



for (int i = 0; i < Year.length() ; i++)
{

if (Character.isDigit(Yearchar))
{ System.out.println(Yearchar + " is numeric.");
  return true;
} else if (Character.isLetter(Yearchar))
{ System.out.println(Yearchar + " is a letter.");
  return false;

}
}

} //end of NumbersOnly method