[Java Servlet]Novizio help

[krakovia]

nel web.xml hai definito il nome ?

<web-app>
  <servlet>
    <servlet-name>servlet</servlet-name>
    <servlet-class>nomePackage.Servlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>servlet</servlet-name>
    <url-pattern>/servlet</url-pattern>
  </servlet-mapping>
</web-app>

nel form
<form name="pippo" action="servlet">