A child container failed during start java.util.concurrent.ExecutionException [duplicate]

Answer 1

I try with http servlet and I find this issue when I write duplicated @WebServlet ,I encountered with this issue.After I remove or change @WebServlet value it is working.

1.Class

@WebServlet("/display")
public class MyFirst extends HttpServlet {

2.Class

@WebServlet("/display")
public class MySecond extends HttpServlet {