I have already do this but does not help. The synch in this case does not help, as it LOCKS the object that calls the method and NOT THE the array that is used by the method and also by the jsp page. (my use of 'volatile' also does not help).
Ionel. > Syncronize the code/method that populates the array as well as the > code/methods that access it. This can either be done using the syncronise > method modifier, or using syncronised blocks, which is better. > > This is however more of an elementary Java issue though, search the web for > the PDF version of Bruce Eckel's book: "Thinking in Java" and read chapter > 14. > > > > > -----Original Message----- > > From: Ionel Condor [SMTP:[EMAIL PROTECTED]] > > Sent: 07 November 2002 02:43 > > To: [EMAIL PROTECTED] > > Subject: how to lock the access to an array till a method is > > finished... > > > > Hi, > > I have the following situation: > > In a bean, I have a method that populates an array with a large, very > > large > > amount of data (required for some operations). > > From my jsp page I do not want to allow any web clients to see the length > > of > > this array, till the process of population is finished....I mean that > > otherwise one can see intermediary results and I want to avoid this. > > > > (I have tried to mark volatile the array but this helps me only to keep > > the > > correct value in all the threads, does not lock me also the object). > > > > Do I have to use a complicated wait/notify mechanism to achive this or how > > can I do ? > > > > Many thanks, > > Ionel C. > > > > ========================================================================== > > = > > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff > > JSP-INTEREST". > > For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST > > DIGEST". > > Some relevant FAQs on JSP/Servlets can be found at: > > > > http://archives.java.sun.com/jsp-interest.html > > http://java.sun.com/products/jsp/faq.html > > http://www.esperanto.org.nz/jsp/jspfaq.jsp > > http://www.jguru.com/faq/index.jsp > > http://www.jspinsider.com > -- > > It is the strict policy of Truworths that its e-mail facility and all > e-mail communications emanating therefrom, should be utilised for > business purposes only and should conform to high professional and > business standards. Truworths has stipulated certain regulations in > terms whereof strict guidelines relating to the use and content of > e-mail communications are laid down. The use of the Truworths e-mail > facility is not permitted for the distribution of chain letters or > offensive mail of any nature whatsoever. Truworths hereby distances > itself from and accepts no liability in respect of the unauthorised > use of its e-mail facility or the sending of e-mail communications > for other than strictly business purposes. Truworths furthermore > disclaims liability for any unauthorised instruction for which > permission was not granted. Truworths Limited accepts no liability > for any consequences arising from or as a result of reliance on this > message unless it is in respect of bona fide Truworths business for > which proper authorisation has been granted. > > Any recipient of an unacceptable communication, a chain letter or > offensive material of any nature is requested to notify the Truworths > e-mail administrator ([EMAIL PROTECTED]) immediately in order that > appropriate action can be taken against the individual concerned. > > =========================================================================== > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". > For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". > Some relevant FAQs on JSP/Servlets can be found at: > > http://archives.java.sun.com/jsp-interest.html > http://java.sun.com/products/jsp/faq.html > http://www.esperanto.org.nz/jsp/jspfaq.jsp > http://www.jguru.com/faq/index.jsp > http://www.jspinsider.com =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com
