In case of Servlets we have,
protected void doGet(HttpServletRequest req, HttpServletResponse resp){
resp.getOuputStream().write(somthing);
}
the above gives servlet output stream is there any way in ZK to do the same.
What's your real use-case for this ?
If you are writing some details in html , it's better to use zk component directly.
In some case you could get the response from the execution.
((HttpServletResponse)Executions.getCurrent().getNativeResponse()).getOutputStream()
But I don't think that's a good idea, be sure you know what you are exactly doing before you use this approach.
It's better to provide your use-case instead of code snippets.