Is this true about jsp:usebean?

Question

Hi, let me explain this.....i have a Jsp, a business class and a business entity (Country)
Let's say that the business class connects to a database and retrieve some information (List of Countries with all their attributes)...so the business class instanciates a business entity (Country) with the variable "entityCountry" and encapsulates the information retrieved in the "entityCountry". Then in my JSP i want to display a list of countries....so i use
<jsp:usebean id="entityCountry" scope="session" class="Country"/>This catches the object, the business class previously instanciated, with all the information it was retrieved from the database? it doesn't create another object with null attributes? is it the same??

Answer 1

As described [url http://java.sun.com/products/jsp/syntax/1.2/syntaxref1217.html#8865]here
If the attribute is found in session scope, then it uses the value already created.
If it is not found, then it instantiates a new instance.
This code in a JSP
<jsp:usebean id="entityCountry" scope="session" class="Country"/>
translates to approximately this java code
Country entityCountry = session.getAttribute("entityCountry");
if (entityCountry == null) {
  entityCountry = new Country();
}