import java.servlet.*; import java.servlet.http.*; import java.io.*; public class HelloNameServlet extends HttpServlet { public void service(ServletRequest request, ServletResponse response) { service((HttpServletRequest) request, (HttpServletResponse) response); } public void service(HttpServletRequest request, HttpServletResponse response) { String msg = ""; String name = request.getParameter("firstname"); if (name != null) { msg += "Hello " + name; } else { msg += "Hello whoever you are."; } msg += ""; response.setContentLength(msg.length()); response.setContentType("text/html"); try { PrintStream rs = new PrintStream(response.getOutputStream()); rs.print(msg); } catch (IOException e) { } } }