Session in JSP Example to use Sessing Object in JSP

Session in JSP Example to use Sessing Object in JSP
You can use Session object  in jsp  with object  "session"
Example Code for JSP session
This Example Show you for
 - How to set object to session
 - How to get value from session by key
 - How to get Session ID
 - How to collect attribute name from session
 - How to destroy session
<%
//You can put object  to session with key and value
session.setAttribute("key","Value Object");
session.setAttribute("key1","Value1");
// Get Data from Session by Key
String data=(String)session.getAttribute("key1");
// Get Session id  from session object
String sessionID=session.getId();
//Load all  attribute name  from session to Enumeration
Enumeration em=session.getAttributeNames();
while(em.hasMoreElements()){
out.println(em.nextElement());
}

//Destroy session
session.invalidate();
%>