Map servlet programmatically instead of using web.xml or annotations

Question

How can I implement this mapping programmatically without web.xml or annotations? The mission is not to use any framework like spring or something else.

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Answer 1

You can use annotations to achieve this using code.

import java.io.IOException;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/hello")
public class HelloServlet extends HttpServlet {
    public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
        response.getWriter().println("Hello");
    }
}

You can read about annotations here, here and here