The superclass "Javax.servlet.http.HttpServlet" is not found on the Java Build Path

Today, this problem occurs when you import an already-written Web application to native with Eclipse, and a red fork appears at the top of the JSP page.

The error message is "The superclass" Javax.servlet.http.HttpServlet "is not found on the Java Build Path",

After finding the information on the web, it was found that the Tomcat runtime class was not added.

Here's how to fix it:

1. Right-click Web Project-"Properties or Build path-" Java build path->libraries-> Add libray...->server Runtime-"Tomcat Server
2. Switch to Orader and Export in the Java Build path interface and select Tomcat

At this point, the error message disappears and the problem is resolved.

The superclass "Javax.servlet.http.HttpServlet" is not found on the Java Build Path