how to pass values from jsp to servlet

[jksathya]

i used 3 index.html.in that i used 3 links for edit,view,delete operation.based on link clicked,the corresponding button only send to servlet in order to enable the operation.
in index.html i wrote like that
<a href="newuser.html?val=newuser" "> create new user</a><br>
<a href="deleteuser.html?val=deleteuser "> Delete user</a><br>
<a href="edit.html?val=edit "> Edit user</a><br>
in servlet,
String value=request.getParameter("val");
System.out.println("val"+value);
i received val is null.if any one help me .how to pass values in order to do particualr operation(edit,view,delete)

[Tolls]

According to that href you are going to a html pages on those links.
Have you mapped the servlet to those pages?