Java EE 8 Design Patterns and Best Practices

Implementing FrontController

Here, we have an implementation of MyAppController, which is a FrontController to treat all the requests of an application:

import com.rhuan.action.Command.AbstractCommand;import com.rhuan.action.Command.HomeCommand;import com.rhuan.action.Command.LoginCommand;import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;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 java.io.IOException;@WebServlet(name = "MyAppController", urlPatterns = "/myapp/*")public class MyAppController extends HttpServlet {    private static Logger logger ...