Location of a bean

Question

Hi
I have a basic question about java beans.
I have created a bean class.
I use that bean class in one of my jsp pages, where is the bean object created ? on the server or the client.....
The reason I ask this question is, I have a database and i get a list of data from the database( required for all users) what i want to figure out is if i can make a vector as a static object in the bean class and populate that vector from the database only once, this way i can save multiple access to the database and also save memory in case this bean is located on the server.
thanx
deepak

Answer 1

I use that bean class in one of my jsp pages, where is the bean object
created ? on the server or the client.....Take a look at the acronym. JSP: Java server pages.
With JSP everything java related is on the server. As far as the client is concerned, it just gets back an html page (possibly with javascript in it)
i get a list of data from the database( required for all users) Sounds like you want to have your bean/list in application scope.
Application scope relates to the ServletContext attributes.
Application scope attributes are shared/accessible to all users of a web app.
// store the data
List myData = getMyDataFromWhereever();
ServletContext application = getServletConfig().getServletContext();
application.setAttribute("myGlobalData", myData);
// retrieving it
<jsp:useBean name="myGlobalData" class="java.util.List"/>
// or
List myData = (List) application.getAttribute("myGlobalData");Cheers,
evnafets