J2EE™ Tutorial, The

Initializing and Finalizing a JSP Page

You can customize the initialization process to allow the JSP page to read persistent configuration data, initialize resources, and perform any other one-time activities by overriding the jspInit method of the JspPage interface. You release resources using the jspDestroy method. The methods are defined using JSP declarations, discussed in Declarations (page 261).

The bookstore example page initdestroy.jsp defines the jspInit method to retrieve or create an enterprise bean database.BookDBEJB that accesses the bookstore database; initdestroy.jsp stores a reference to the bean in bookDBEJB. The enterprise bean is created using the techniques described in Chapter 2.

 private BookDBEJB bookDBEJB; public void ...