opening new pop up window from servlet

[Raj Kumar Bindal]

How can we open new pop up window from a servlet.There are no links,button etc. in the servlet.It is just doing some processing and then need to open a pop up window.
Any help.

[Bauke Scholtz]

Http fortunately disallows push. The whole web would have been very scary otherwise.

No, you can't do that without any client interaction. The client is the only who may send a new request. In the server you only can send the response or replace the request. You can't send a response without a request.

What's the functional requirement after all? You normally open new browser windows using the target attribute which is available in the HTML <form> and <a> elements. You can also use Javascript to open a new browser window using the window.open() function.