Servlet is thread safe or not. if not then how can I make thread safe?

Servlet is not Thread safe. we can make servlet Thread safe from Single Thread Model Interface.
This interface ensure that servlet can handle only one request at a time. Its a marker interface means no method.

Now implementing Single Thread Model Interface :-

				
					import java.io.IOException;
import java.io.PrintWriter;

public class MyServlet extends HttpServlet implements SingleThreadModel {
public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
    {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
out.print("Single Thread");
try     {
Thread.sleep(10000);
         }catch(Exception e){
e.printStackTrace();
      }
out.print("model");
out. close();
   }
}