404 Error when running project from Eclipse on Tomcat Server

Question

I am facing the following issue while running my JAVA Servlet program on Tomcat10.0.10 server from Eclipse IDE. I have tried to change Server from project properties and also cleaned and restarted the server again, but the same error is coming. Here are the pics of my file structure and the errors -

Error Image -

Here is the Server Console Screenshot -

And the code for the servlet is -

package net.javaguides.usermanagement.web;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.javaguides.usermanagement.dao.UserDAO;
import net.javaguides.usermanagement.model.User;
import java.util.*;


@WebServlet("/")
public class UserServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    private UserDAO userDAO;

    /**
     * Default constructor. 
     */
    public UserServlet() {
        this.userDAO=new UserDAO();
    }
    
    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
        String action = request.getServletPath();
        
        switch(action) {
        
        case "/new":
            showNewForm(request,response);
            break;
        
        case "/insert":
            try {
                insertUser(request,response);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            break;
        
        case "/delete":
            try {
                deleteUser(request,response);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            break;
        
        case "/edit":
            showEditForm(request,response);
            break;
        
        case "/update":
            try {
                updateUser(request,response);
            } catch (SQLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            break;
        
        default:
            try {
                listUser(request,response);
            } catch (SQLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (ServletException e) {
                e.printStackTrace();
            }
            break;
        }
    }
    
    private void listUser(HttpServletRequest request, HttpServletResponse response) throws SQLException, IOException, ServletException {
        List<User> listUser=userDAO.selectAllUsers();
        request.setAttribute("listUser", listUser);
        
        RequestDispatcher dispatcher = request.getRequestDispatcher("user-list.jsp");
        dispatcher.forward(request, response);
    }
    
    private void updateUser(HttpServletRequest request, HttpServletResponse response) throws SQLException, IOException {
        int id=Integer.parseInt(request.getParameter("id"));
        String name=request.getParameter("name");
        String email=request.getParameter("email");
        String country=request.getParameter("country");
        
        User user=new User(id,name,email,country);
        userDAO.updateUser(user);
        response.sendRedirect("list");
    }
    
    private void deleteUser(HttpServletRequest request, HttpServletResponse response) throws IOException, SQLException {
        int id=Integer.parseInt(request.getParameter("id"));
        userDAO.deleteUser(id);
        response.sendRedirect("list");
    }
    
    private void showEditForm(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        int id=Integer.parseInt(request.getParameter("id"));
        User existingUser=userDAO.selectUser(id);
        RequestDispatcher dispatcher = request.getRequestDispatcher("user-form.jsp");
        request.setAttribute("user",existingUser);
        dispatcher.forward(request, response);
    }
    
    private void showNewForm(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        RequestDispatcher dispatcher = request.getRequestDispatcher("user-form.jsp");
        dispatcher.forward(request, response);
    }
    
    private void insertUser(HttpServletRequest request, HttpServletResponse response) throws IOException, SQLException {
        String name=request.getParameter("name");
        String email=request.getParameter("email");
        String country=request.getParameter("country");
        User newUser=new User(name,email,country);
        userDAO.insertUser(newUser);
        response.sendRedirect("list");
    }
}

Can anyone please help me solve this issue...