//ex2d4.java

import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ex2d4 extends HttpServlet
{
   public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
   {
      PrintWriter out = res.getWriter();
      Date date = new Date();
      DateFormat df = DateFormat.getInstance();

      String zone = req.getParameter("zone");
      if(zone != null)
      {
         TimeZone tz = TimeZone.getTimeZone(zone);
         df.setTimeZone(tz);
      }

      out.println(df.format(date));
   }
}
//..