Using Scope Objects
Collaborating web components share information by means of objects that are maintained as attributes of four scope objects. You access these attributes using the [get|set]Attribute methods of the class representing the scope. Table 10–2 lists the scope objects.
Table 10–2 Scope Objects|
Scope Object |
Class |
Accessible From |
|---|---|---|
|
Web context |
javax.servlet.ServletContext |
Web components within a web context. See Accessing the Web Context. |
|
Session |
javax.servlet.http.HttpSession |
Web components handling a request that belongs to the session. See Maintaining Client State. |
|
Request |
subtype of javax.servlet.ServletRequest |
Web components handling the request. |
|
Page |
javax.servlet.jsp.JspContext |
The JSP page that creates the object. |
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