Problem mit log4j - beim Start des Images kommt immer die Meldung: "ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console..."

src/main/java/de/kneitzel/JavaFXApp.java

@@ -1,14 +1,16 @@
 package de.kneitzel;
 
 import javafx.application.Application;
-import javafx.event.ActionEvent;
-import javafx.event.EventHandler;
 import javafx.scene.Scene;
 import javafx.scene.control.Button;
 import javafx.scene.layout.StackPane;
 import javafx.stage.Stage;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
 
 public class JavaFXApp extends Application {
+	static final Logger logger = LogManager.getLogger(JavaFXApp.class);
 
 	@Override
 	public void start(Stage primaryStage) {
@@ -24,6 +26,7 @@ public class JavaFXApp extends Application {
 	}
 
 	public static void main(String[] args) {
+		logger.warn("Starting ...");
 		launch(args);
 	}
 	   

src/main/java/module-info.java

@@ -3,6 +3,8 @@ module FXAppModule {
     requires javafx.graphics;
     requires javafx.controls;
     requires javafx.web;
+    requires org.apache.logging.log4j;
+//    requires org.apache.logging.log4j.core;
 
     exports de.kneitzel;
     opens de.kneitzel;