OK, I understand now. That makes sense. Thanks for your help, Craig & Richard!
Matt ----- Original Message ----- From: "Yee, Richard K,,DMDCWEST" <[EMAIL PROTECTED]> To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]> Sent: Tuesday, December 23, 2003 3:37 PM Subject: RE: Example of a non-threadsafe Action? > 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] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
