how to call servlet immediate after dialog close

In your use case, I would suggest you to use Event Listener on node addition.

There are different events you can leverage

Hi @sudarshanreddy ,

You can use following in your component clientlib-JS:

(function(document, $, ns) {
    "use strict";
    $(document).on("click", ".cq-dialog-submit", function(e) {
        $.ajax({
            type: 'GET',
            url: '/your/servlet/path',
            data: {
                text: "TEXT",
                heading: "HEADING"
            },
            success: function(msg) {
                alert('success');
            }
        });
    });
})(document, Granite.$, Granite.author);

Hope this helps, thanks!