Servlet Output Streams and clearing

I am using servlets, and I want to be able to print something repeatedly. Well, that's not exactly true: I can print something repeatedly. Using a ServletOutputStream, it doesn't seem possible to clear what has already been written. Here's the code:
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.io.*;
public class AlwaysTime extends HttpServlet {
     public void doPost(HttpServletRequest req, HttpServletResponse res)                throws ServletException, IOException {
          HttpServletResponse oldRes = res;
          Date now = new Date();
          res.setContentType("text/html");
          ServletOutputStream out = res.getOutputStream();
          out.println("<html>");
          out.println("<head>");
          out.println("<title>Clock</title>");
          out.println("</head>");
          out.println("<body>");
          out.println("<h1 align=\"Center\">");
          out.println(now.toString());
          out.println("</h1>");
          out.println("</body>");
          out.println("</html>");
          try {
             Thread.sleep(1000);
          } catch (InterruptedException ie) {}
          // Do nothing: wait for 1 second.
          doPost(req, oldRes);
     public void doGet(HttpServletRequest req, HttpServletResponse res)
          throws ServletException, IOException {
          doPost(req, res);
}This code prints the time every second, but I want to clear the previous output stream. I thought the code shown above would work, but of course, oldRes points to the same object as res. But I don't know how to clear an output stream, so that it is completely empty. Instead, each of the new lines are appended to the same output stream.
This doesn't only apply to servlet output streams: is there some way to clear the System output stream, for instance?
But mainly the servlet output stream ...

You would not want to use HTTP for this type of functionality. HTTP is known as a 'stateless' protocol that simply returns one exact response for each request. So, there is not way to 'clear' the stream (technically, you would not do so for 'normal' streams either, but when you add HTTP into the mix, the task is definitely not possible).
You could implement the above using a RSS feed, or by using HTTP meta-refresh tags on the page itself ot resubmit the requests every second (though this would be inefficient). An applet would also do the task.
- Saish

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import java.io.StringWriter;
import javax.servlet.http.*;
import javax.servlet.*;
import java.awt.Color;
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Something like the following code:
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http://www.javaworld.com/javaworld/jw-05-2000/jw-0505-servlets-p2.html
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No I am using JSP 1.3. And I want to do the following:<%
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Salutaions!
I'm trying to write a peice of code that takes input from a file and outputs it in the following way: (1)Any string of two or more blank space is replaced by a single space. (2)All sentences start with an uppercase letter. Define a sentence as beginning after a ".", "?","!"
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import java.io.*;
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one clear mistake i can see in this method is that you r calling input.read() twice every time. once in the if(input.read()..) statement and then in the statement
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y

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          > production server, the page is blank for ten seconds and then shows
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          > Setup:
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          >
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Just if you want to look at the details .....
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HouseofHunger wrote:
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