import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.ServletConfig;
import javax.servlet.annotation.WebServlet;

@WebServlet("/lifecycle")
public class LifecycleServlet implements javax.servlet.Servlet {
    public void init(ServletConfig config) throws ServletException {
        System.out.println("Servlet Initialized");
    }

    public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
        System.out.println("Servlet is servicing the request");
    }

    public void destroy() {
        System.out.println("Servlet Destroyed");
    }

    public ServletConfig getServletConfig() {
        return null;
    }

    public String getServletInfo() {
        return null;
    }
}
web.xml

<web-app xmlns="http://java.sun.com/xml/ns/javaee" version="3.0">
    <servlet>
        <servlet-name>LifecycleServlet</servlet-name>
        <servlet-class>LifecycleServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>LifecycleServlet</servlet-name>
        <url-pattern>/lifecycle</url-pattern>
    </servlet-mapping>
</web-app>