Serialized form data in Java

Question

I serialize the form and send to java via ajax

var basic = $("#basicForm").serialize();
$.post("user.do?action=save_details",{basic:basic},function(data){

});

The variable basic look like

name=Ram&age=23&desc=testdescription&place=kilimanoor....

Now in java file I want to take each values(name,age,place etc).

In java I have:

String basicdata = rq.getParameter("basic");

How I extract each parameters(name, age etc) from basicdata in java?