Tomcat 10.0.4 doesn’t load servlets (@WebServlet classes) with 404 error [duplicate]
For copyright reasons the Servlet 5.0 API (implemented by Tomcat 10) and the Servlet 4.0 API (implemented by Tomcat 9) are incompatible: the API namespace changed from javax.* to jakarta.*. This can manifest in many ways: Software written for Servlet 4.0 does not compile against the API jars from Tomcat 10: cf. Servlet 5.0 JAR … Read more