call a jsp method from javascript
===

I use a method in jsp page like this and the page is saved in the name of new.jsp

    <%!
    public void createXml(String graph) throws Exception
`{`

    try

`{
        String str="dinesh"`

        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = builderFactory.newDocumentBuilder();
        Document doc = docBuilder.newDocument();
    }

    catch(Exception e)
    {
    System.out.println(e);
    }
`}`

`%>`

If i call this page like this

    <form method="post" action="new.jsp">

But, I want to call this method of createXml only using javascript or jquery coding because i am going add various method in the new.jsp. Any one help this to call method without calling the whole jsp page
