A servlet is actually a java class that implements a special interface, but this kind of tomcat server is recognized, so the servlet is created by the programmer, but it is executed by the server call
Servlet is actually a java class that implements a special interface, except that such tomcat servers are known, so servlets are created by programmers, but are executed by server calls
Servlets are actually Java classes that implement special interfaces, but Tomcat servers of this kind are known, so servlets are created by programmers, but they are called and executed by servers<br>