java.lang.ClassNotFoundException: HelloServlet at org.apache.catalina.loader.WebappClassLoader.loadClass

Question

I have a Hello World servlet in webapps/hello/WEB-INF/class/HelloServlet.class and I registered it as below in web.xml:

Answer 1

I had the same problem (I'm using old fashion servlets for "learning"), and i solved by rebuilding the maven project (in eclipse maven-->Update Project) and cleaning the project both in eclipse and tomcat. I assume the error was thrown as the class was not compiled by maven and consequently not included in the compiled packages of tomcat.