The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path [duplicate]

Answer 1

These steps can really help you:

1. If you didn't install any server you have to do these steps:

   Menu Window → Preferences → Expend Server → Runtime environment → Add → choose a name and then choose the Apache server path that you already installed on your PC (you can press download and install too) → Finish → OK

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2. Add the Tomcat server:

   Project Properties → Java Build Path → Add Library → Select "Server Runtime" from the list* → Next → Select "Apache Tomcat" → Finish

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