Java tutorial
import java.io.*; import javax.servlet.*; import javax.servlet.http.*; public class MyServlet extends HttpServlet { public void init(ServletConfig config) throws ServletException { super.init(config); throw new NullPointerException(); } public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { ServletOutputStream out = res.getOutputStream(); res.setContentType("text/html"); out.println("<html><head><title>Exception Thrower</title></head>"); out.println("<body>You'll never see this!</body></html>"); } }