diff --git a/.idea/misc.xml b/.idea/misc.xml
index 588f4f9..71286c2 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_13" project-jdk-name="13" project-jdk-type="JavaSDK">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/java/com/wasteinformationserver/main.java b/src/java/com/wasteinformationserver/main.java
index b43b53b..be98985 100644
--- a/src/java/com/wasteinformationserver/main.java
+++ b/src/java/com/wasteinformationserver/main.java
@@ -13,42 +13,41 @@ public class main {
         Log.setLevel(Log.DEBUG);
 
 
-       Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
             try {
                 Thread.sleep(200);
                 Log.warning("Shutting down ...");
 
                 //shutdown routine
-            }  catch (InterruptedException e) {
+            } catch (InterruptedException e) {
                 e.printStackTrace();
             }
         }));
 
-       //initial connect to db
+        //initial connect to db
         Log.message("initial login to db");
-       new Thread(() -> {
-           try {
-               JDCB.init("users", "kOpaIJUjkgb9ur6S", "wasteinformation","192.168.65.15",3306);
-           } catch (IOException e) {
-               //e.printStackTrace();
-               Log.error("no connection to db");
-           }
-       }).start();
+        new Thread(() -> {
+            try {
+                JDCB.init("users", "kOpaIJUjkgb9ur6S", "wasteinformation", "192.168.65.15", 3306);
+            } catch (IOException e) {
+                //e.printStackTrace();
+                Log.error("no connection to db");
+            }
+        }).start();
 
-       //startup web server
+
+        //startup web server
         Thread mythread = new Thread(() -> new Webserver().startserver());
         mythread.start();
 
 
         //startup mqtt service
         Log.message("starting mqtt service");
-        try{
+        try {
             mqtt m = new mqtt();
             m.notifymessage();
-        }catch (Exception e){
-            e.printStackTrace();
+        } catch (Exception e) {
+            Log.debug("An error was happened in the class mqtt");
         }
-
-
     }
 }
diff --git a/src/java/com/wasteinformationserver/mqtt/mqtt.java b/src/java/com/wasteinformationserver/mqtt/mqtt.java
index 8253fe2..3dc547e 100644
--- a/src/java/com/wasteinformationserver/mqtt/mqtt.java
+++ b/src/java/com/wasteinformationserver/mqtt/mqtt.java
@@ -33,7 +33,7 @@ public class mqtt {
             client.connect(connOpts);
 
         } catch (MqttException e) {
-            e.printStackTrace();
+            Log.error("Connection to the ESB was failes");
         }
 
         mqttreceiver mr = new mqttreceiver(client);
@@ -56,7 +56,7 @@ public class mqtt {
         try {
             Database = JDCB.getInstance();
         } catch (IOException e) {
-            //e.printStackTrace();
+            Log.error("No Connection to the databank");
         }
         //new JDCB("placeuser", "eaL956R6yFItQVBl", "wasteinformation");
         ResultSet result = Database.executeQuery(message);
@@ -77,23 +77,22 @@ public class mqtt {
                     String tempyearnew = yearsplit[1];
                     String newDate = parts[2] + "." + parts[1] + ".20" + tempyearnew;
                     String[] partstwo = date.split(" ");
-                    String Datetomorrow=nexDayDate();
+                    String Datetomorrow = nexDayDate();
 
 
                     int abholtag;
-                    if (partstwo[0].contains(newDate)||partstwo[0].contains(Datetomorrow)) {
+                    if (partstwo[0].contains(newDate) || partstwo[0].contains(Datetomorrow)) {
                         abholtag = 1;
                         transmitmessageAbfallart(clientidentify + "," + wastetyp + "," + abholtag);
-                    }else {
-                        abholtag=0;
+                    } else {
+                        abholtag = 0;
                         transmitmessageAbfallart(clientidentify + "," + wastetyp + "," + abholtag);
                     }
 
                 }
             }
         } catch (SQLException e) {
-            System.out.println("Exception");
-            e.printStackTrace();
+            Log.error("No data from databank");
         }
 
     }
@@ -116,12 +115,9 @@ public class mqtt {
         c.add(Calendar.DATE, 1);
         Date currentDatePlusOne = c.getTime();
 
-        String temp=dateFormat.format(currentDatePlusOne);
-        String split[]=temp.split("/");
-        String newDate=split[2]+"."+split[1]+"."+split[0];
+        String temp = dateFormat.format(currentDatePlusOne);
+        String split[] = temp.split("/");
+        String newDate = split[2] + "." + split[1] + "." + split[0];
         return newDate;
-
-
-
     }
 }
\ No newline at end of file
diff --git a/src/java/com/wasteinformationserver/mqtt/mqttreceiver.java b/src/java/com/wasteinformationserver/mqtt/mqttreceiver.java
index cca19b0..7a8a64a 100644
--- a/src/java/com/wasteinformationserver/mqtt/mqttreceiver.java
+++ b/src/java/com/wasteinformationserver/mqtt/mqttreceiver.java
@@ -24,15 +24,15 @@ public class mqttreceiver {
     public String getmessage() {
 
         try {
-                        client.setCallback(new MqttCallback() {
+            client.setCallback(new MqttCallback() {
                 @Override
                 public void connectionLost(Throwable throwable) {
-Log.error("connection lost");
+                    Log.error("connection lost");
                 }
 
                 @Override
                 public void messageArrived(String s, MqttMessage mqttMessage) throws Exception {
-                    message =new String(mqttMessage.getPayload());
+                    message = new String(mqttMessage.getPayload());
                     notifylisteners(message);
 
                 }
@@ -45,7 +45,7 @@ Log.error("connection lost");
             client.subscribe("TopicIn");
             Log.debug("subscribed topic");
         } catch (MqttException e) {
-            e.printStackTrace();
+            Log.error("Connection to the ESB was failed");
         }
         return message;
     }
diff --git a/src/java/com/wasteinformationserver/mqtt/mqtttransmitter.java b/src/java/com/wasteinformationserver/mqtt/mqtttransmitter.java
index daf2d21..fdfaa94 100644
--- a/src/java/com/wasteinformationserver/mqtt/mqtttransmitter.java
+++ b/src/java/com/wasteinformationserver/mqtt/mqtttransmitter.java
@@ -12,7 +12,7 @@ public class mqtttransmitter {
     MqttClient client;
 
     public mqtttransmitter(MqttClient client) {
-        this.client=client;
+        this.client = client;
     }
 
     public void sendmessage(String temp) {
@@ -36,7 +36,6 @@ public class mqtttransmitter {
             Log.debug("loc " + me.getLocalizedMessage());
             Log.debug("cause " + me.getCause());
             Log.debug("excep " + me);
-            me.printStackTrace();
         }
     }
 }
\ No newline at end of file