How to run two threads simultaneously ....?

Hello All,
I Am developing an application which send some data to server and from remote place that data is fetched and displayed.
For this i am using Java Servlet as a server which accepts data by readObject() method of object output stream and writes using writeObject() method.
At remote end i am fetching the data and printing that using thread.Data is fetched using URL's method
URL urlServlet = new URL("URL of servlet");
URLConnection con = urlServlet.openConnection();But while fetching it takes some time say 1-2sec because of that my display is not continuous.
I want to write an application such that two threads will be running(in synchronization),second thread will start after few ms of 1st thread.One thread will continuously fetches data and other will display, so that there will be no delay at all while displaying of data.
How to do this?
Thanks In Advance.

Google on: java producer consumer example
Kaj

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