> -----Original Message----- > From: Eric Noriega [mailto:[EMAIL PROTECTED]] > Sent: Friday, January 03, 2003 1:31 PM > To: [EMAIL PROTECTED] > Subject: Re: Use of Vector > > > This is totaly false. You do need to worry about > threading, if the > variable is static to the class (not instance).
Yups thats true, that when a variable is static, and two threads are accessing the static variable then the value of the variable can be changed. But my dear, what i am saying is that in web applications, the container takes part of the threading issues for you, and where every user has got a different session for him. >Even a vaiable in the > session could be accessed by two threads. What exactly do you mean by session could be accessed by two threads? > >Also I've seen some poeple > mention not to use Vector because it is "old". This is also not true, > Vector can be useful and is not depricated at this time. Vector has its own uses, and I dont see down the lane also vector being deprecated. > > > Vikramjit Singh wrote: > > >>-----Original Message----- > >>From: Amit Ghaste [mailto:[EMAIL PROTECTED]] > >>Sent: Friday, January 03, 2003 12:12 AM > >>To: [EMAIL PROTECTED] > >>Subject: Re: Use of Vector > >> > >> > >>Vikramjit, > >> > >>The reason that Vector is Synchronized is the main reason why > >>I would use it > >>in a web application... > >> > >>I dont want adhoc volatile values to be present.. > >> > > > >I dont think in web application you need to care about > threads, since the > >container handles all the threading issues for you. Vectors > were basically > >used for legacy systems (you can read more in Thinking in > JAVA-Bruce Eckel) > >As far is volatile values, they arise in stand alone > applications and not > >web driven. > > > >>Snehal, > >> > >>Could u explain what do u mean by Master Value... do u mean > >>for ex.. of > >>populating drop down lists, a list that is common across > >>users and sessions. > >>like an Application level data... > >> > >>if so then yes i would use a Synchronized Collection object, > >>Vector works > >>inplictly as a Synchronized Object, but if u want to use > >>another class then > >>I would recomend using the Synchroinzation technique in the > >>Collections > >>class so as to maintain data itegrity. > >> > >>Amit. > >> > > > >Vikram. > > > >>-----Original Message----- > >>From: A mailing list about Java Server Pages specification > >>and reference > >>[mailto:[EMAIL PROTECTED]]On Behalf Of Vikramjit Singh > >>Sent: Wednesday, January 01, 2003 10:31 PM > >>To: [EMAIL PROTECTED] > >>Subject: Re: Use of Vector > >> > >> > >>>-----Original Message----- > >>>From: Snehal Pandya [mailto:[EMAIL PROTECTED]] > >>>Sent: Thursday, January 02, 2003 11:57 AM > >>>To: [EMAIL PROTECTED] > >>>Subject: Use of Vector > >>> > >>> > >>>Hi All, > >>>I have a Application and For that I want to put all Master > >>>value in the > >>>Vector . > >>>Whether this is good programming or it is benifishery. > >>>My application is for intranet only. > >>>Please help me how to use it and how to retrive the > >>>information from the > >>>Vector. > >>> > >>vector is not useful for web applications, just coz of the > >>basic reason that > >>it is synchronized. > >>You could use other Collection classes or check the List interface. > >> > >>My 2 cents: > >> > >>For inserting the values use LinkedList (since LinkedList is > >>faster for > >>insert operations). > >>LinkedList provides sequential access, additions and > >>deletions, at a cost of > >>slower random access. > >>For retrieving or reading the values use ArrayList (ArrayList > >>is faster for > >>read operations). > >> > >>For instance, if your program is to frequently provide random > >>access to the > >>data of the list, (for example, "show me item three, > twelve, two, and > >>twenty-five") the ArrayList class offers quick access to > >>individual elements > >>of the list. > >> > >>When working with ArrayList and LinkedList, there are two > >>ways of creating > >>the objects: > >> > >>List cityList = new ArrayList(); > >>LinkedList peopleList = new LinkedList(); > >> > >>The above creation ensures that, line 1 that we are creating > >>an ArrayList > >>but we are gonna use it as a List. While line 2 that, we are > >>gonna use a > >>linked list as a LinkedList :). > >> > >>>Thanks for help, > >>> > >>>Snehal > >>> > >>Vikram. > >> > >>>============================================================== > >>>============= > >>>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 > >>> > >>Disclaimer: This e-mail message along with any attachments is > >>intended only > >>for the addressee and may contain confidential and privileged > >>information of > >>GTL Limited. If the reader of this message is not the > >>intended recipient, > >>you are notified that any dissemination, distribution or > copy of this > >>communication is strictly prohibited. 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