To try this recipe, perform the following steps:

1. Write this simple servlet:

@WebServlet(name = "LifecycleServlet", 
urlPatterns = {"/LifecycleServlet"})
public class LifecycleServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, 
    HttpServletResponse resp) throws ServletException, IOException {
        try(PrintWriter writer = resp.getWriter()){
            writer.write("doGet");
            System.out.println("doGet");
        }
    }
    
    @Override
    protected void doPost(HttpServletRequest req, 
    HttpServletResponse resp) throws ServletException, IOException {
        try(PrintWriter writer = resp.getWriter()){
            writer.write("doPost");
            System.out.println("doPost");
        }
    } 
    
    @Override
    protected void doDelete(HttpServletRequest req, 
    HttpServletResponse resp) throws ServletException, IOException {
        try(PrintWriter writer = resp.getWriter()){
            writer.write("doDelete");
            System.out.println("doDelete");
        }
    }
    
    @Override
    protected void doPut(HttpServletRequest req, 
    HttpServletResponse resp) throws ServletException, IOException {
        try(PrintWriter writer = resp.getWriter()){
            writer.write("doPut");
            System.out.println("doPut");
        }
    } 
    
    @Override
    public void init() throws ServletException {
        System.out.println("init()");
    }

    @Override
    public void destroy() {
        System.out.println("destroy");
    } 
}

Once it is deployed to your Jakarta EE server, I suggest you try it using a tool such as SoapUI or similar. It will allow you to send requests using GET, POST, PUT, and DELETE. The browser would only do GET.

2. If you do that, your system log will look just like this:

Info: init(ServletConfig config)
 Info: doGet
 Info: doPost
 Info: doPut
 Info: doDelete

3. If you undeploy your application, it will look as follows:

Info:   destroy