web application – Why Java / Tomcat WebApps with reverse proxy

Conventional wisdom seems to indicate that Java applications must always be inverted by proxy. That's what I've always done, and so wherever I've worked.

I have read many times that reverse proxy is recommended without much foundation. More often with tomcat and apache.

I understand some of the benefits generally associated with reverse power of attorney; you move some of the validation of the application and the filtering north of the application, but I was wondering if there was a more detailed explanation to this, specific to Java?

I've been looking for that a bit in Google and I have not found anything detailed or convincing.

I guess tomcat receives the HTTP request rather than forwarding it directly to the application.