Matt, A final declaration just means that the reference can't be changed to a different SimpleDateFormat instance. A static declaration just means that there is one instance of the variable for all of the instances of the class. Neither modifier affects how the SimpleDateFormat uses internal instance variables.
-Richard -----Original Message----- From: Sgarlata Matt [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 23, 2003 11:40 AM To: Struts Users Mailing List Subject: Re: Example of a non-threadsafe Action? What if the SimpleDateFormat variable is declared as final and/or static? Thanks, Matt ----- Original Message ----- From: "Craig R. McClanahan" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <[EMAIL PROTECTED]>; "Nifty Music" <[EMAIL PROTECTED]> Sent: Tuesday, December 23, 2003 2:35 PM Subject: RE: Example of a non-threadsafe Action? > Quoting Nifty Music <[EMAIL PROTECTED]>: > > > Thanks Craig! You certainly confirmed my suspicions, although I > > would have > > guessed that I could've gotten away with sharing the > > SimpleDateFormat variable since it wouldn't depend on any values > > coming in from request objects. Could you perhaps shed some light > > on why it wouldn't make sense to > > share it? > > > > Because the internal implementation of SimpleDateFormat uses instance variables > during parsing and formatting, so it's not thread safe :-). > > Craig > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
