// get the frozen state is only one of 0,1,2 IF (StringUtils.notBlank (frozenStatus)) { IF (( "0" .equals (frozenStatus) || "1" .equals (frozenStatus)! | | "2" .equals (frozenStatus))) { errmsgSb.append ( "frozen state parameter value is not valid;" ); // missing parameters returnJson.put ( "The errcode", "3002" ); checkFlag = to false ; } }