Implicit Objects

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Implicit Objects

So far we know that the developer can create Javabeans and interact with Java objects. There are several objects that are automatically available in JSP called implicit objects.

The implicit objects are

Variable	Of type
Request	Javax.servlet.http.httpservletrequest
Response	Javax.servlet.http. httpservletresponse
Out	Javax.servlet.jsp.JspWriter
Session	Javax.servlet.http.httpsession
PageContent	Javax.servlet.jsp.pagecontext
Application	Javax.servlet.http.ServletContext
Config	Javax.servlet.http.ServletConfig
Page	Java.lang.Object

Page object

Represents the JSP page and is used to call any methods defined by the servlet class.

Config object

Stores the Servlet configuration data.

Request object

Access to information associated with a request. This object is normally used in looking up parameter values and cookies.

<% String devStr = request.getParameter("dev"); %>

Development language = <%= devStr %>

This code snippet is storing the parameter "dev" in the string devStr. The result is displayed underneath.