Please follow Adrian's advice and read up on java synchronization. You can synchronize on the instance of the array.
-----Original Message----- From: Ionel Condor [mailto:cionel@;RO-PLANET.RO] Sent: Thursday, November 07, 2002 8:16 AM To: [EMAIL PROTECTED] Subject: Re: how to lock the access to an array till a method is finished ... 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. 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