JSP Implicit Objects

In JSP, implicit objects are pre-defined objects, created by the web container. These objects are created during the translation phase from JSP to Servlet. JSP allows you to call these objects directly without initializing them.

Implicit objects are required to be declared in scriptlet tags only. Hence, in translation phase these objects are embedded within service() method of servlet.

Note: - Servlet provide these objects to enhance the ease of coding in JSP.

List of JSP implicit objects

JSP provides 9 implicit objects that can be used in JSP pages. Each object represents some unique identity. Here, is the list of all implicit objects with their classes.

Object	Classes
out	javax.servlet.jsp.JspWriter
request	javax.servlet.http.HttpServletRequest
response	javax.servlet.http.HttpServletResponse
config	javax.servlet.ServletConfig
application	javax.servlet.ServletContext
session	javax.servlet.http.HttpSession
exception	javax.servlet.http.HttpException
Page	java.lang.object
PageContext	javax.servlet.jsp.PageContext

We will learn more about each object with simple examples.

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