code: public static void GT(char parameter, char expected, String name) throws IllegalArgumentException {
  		if (parameter <= expected) {
  			throw new IllegalArgumentException(String.format("%s is not greater than %c.", name, expected));
  		}
  	}
docs: Test if character parameter is strictly greater than given character value.
  
  @param parameter invocation character parameter,
  @param expected expected character value,
  @param name the name of invocation parameter.
  @throws IllegalArgumentException if <code>parameter</code> is not greater than threshold character.