How to update elements without refreshing the page

Hi Guys, If you want to update page elements dynamically without refreshing a page check this out :
Sorry for making it as images as it was looking too messy if displayed as normal text unlike in eclipse :-)

// in java simply get the request parameter and process it and send it via response

if(!request.getParameter("myVariable").equals("")){

save/ process your data

response.setContentType("text/html;charset=UTF-8");

response.getWriter().write("myUpdatedvalue :"+theUpdatedValue);

}

all you have to do is create a request object and use appropriate get or post and get the response.

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