PageContext Implicit Object

PageContext Implicit Object

In JSP, pageContext is an implicit object of type PageContext class.The pageContext object can be used to set,get or remove attribute from one of the following scopes.

• page
• request
• session
• application

In JSP, page scope is the default scope.

Example of pageContext implicit object

index.html

<form action="welcome.jsp">  
<input type="text" name="uname">  
<input type="submit" value="go"><br/>  
</form>

welcome.jsp

<%   
<%   
  
String name=request.getParameter("uname");  
out.print("Welcome "+name);  
  
pageContext.setAttribute("user",name,PageContext.SESSION_SCOPE);  
  
<a href="One.jsp">One jsp page</a>  
  
%> 

One.jsp

String name=(String)pageContext.getAttribute("user",PageContext.SESSION_SCOPE);  
out.print("Hello "+name);