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session implicit object

Session is an implicit object which type of HttpSession and this object to set,get or remove attribute or to get session information of object.

Example of session

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);  
    session.setAttribute("user",name);  
    <a href="second.jsp">second jsp page</a>     
    %>  
    </body>  
    </html>

second.jsp

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