it is not valid integer

XXX is not a valid integer value What is it the order is valid for (or not valid for)? 什么意思? printer selelted is not valid is not a valid date and time org.hibernate.HibernateException:createCriteria is not valid This ID is valid,but not published 请问:" is not a valid date Key is not valid,please try this is not a valid serial number? printer selected is not valid怎么办 Full name is NOT a valid "0.0 ' is not a valid timestamp