Since Spring 5.3 the CronSequenceGenerator is deprecated, including the static isValidExpression function. The replacement class CronExpression does not contain this helper method, thus throwing us back to a: try { <create expression object>; return true; } catch (Exception e) { return false; } I would like to see the static checker method back, either on CronExpression or on another class. Thanks!

Comment From: ewjmulder

Nice, thanks for the quick action!