JAVA

The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

<!-- we need to add the Servlet API dependency: javax.servlet-api -->
  	<dependency>
  		<groupId>javax.servlet</groupId>
  		<artifactId>javax.servlet-api</artifactId>
  		<version>3.1.0</version>
	</dependency>

The superclass "jakarta.servlet.http.HttpServlet" was not found on the Java Build Path

Right click on project ---> 
  Properties ---> 
  Java Build Path ---> 
  Add Library... ---> 
  Server Runtime ---> 
  Apache Tomcat ----> Finish.