13.4. Sharing Beans
Up to this point, I have treated the objects that were created with jsp:useBean as though they were simply bound to local variables in the _jspService method (which is called by the service method of the servlet that is generated from the page). Although the beans are indeed bound to local variables, that is not the only behavior. They are also stored in one of four different locations, depending on the value of the optional scope attribute of jsp:useBean. The scope attribute has the following possible values:
This is the default value. It indicates that, in addition to being bound to a local variable, the bean object should be placed in the PageContext object for the duration of the current request. In principle, storing ...