Check if the given String is not null or has a value other than whitespace.

HasValue.java

	/**
	 * Check that the given String is not null and has a value other than
	 * whitespace.
	 * 
	 * {@code 
	 *  hasValue(null)      = false
	 *  hasValue("")        = false
	 *  hasValue(" ")       = false
	 *  hasValue("bob")     = true
	 *  hasValue("  bob  ") = true
	 *  }
	 * 
	 * @param input String
	 * @return true if the input has a value, and false if not.
	 */
	public static boolean hasValue(String input) {
		if ( input != null && input.trim().length() > 0 ) {
			return true;
		} else {
			return false;
		}
	}