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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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