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JSP pageContext implicit object

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7) 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

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

welcome.jsp

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

second.jsp

<html> <body> <%   String name=(String)pageContext.getAttribute("user",PageContext.SESSION_SCOPE); out.print("Hello "+name);  %> </body> </html>  

Output

jsp pageContext implicit object output 1 jsp pageContext implicit object output 2 jsp pageContext implicit object output 3


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