HttpServlet cannot be resolved to a type … is this a bug in eclipse?

Question

Every thing was fine and i was able to run this JSP project, suddenly some thing happened and mostly all my servlets getting unresolved error.

I know its because sp

Answer 1

It means that servlet jar is missing .

check the libraries for your project. Configure your buildpath download **

servlet-api.jar

** and import it in your project.