final überall da wo intellij das meinte

src/main/java/de/uniluebeck/mi/projmi6/controller/DiagnoseController.java

@@ -23,7 +23,7 @@ import javafx.scene.layout.GridPane;
  */
 public class DiagnoseController {
 
-    private SimpleObjectProperty<ObservableList<Diagnose>> diagnosen = new SimpleObjectProperty<>();
+    private final SimpleObjectProperty<ObservableList<Diagnose>> diagnosen = new SimpleObjectProperty<>();
 
     /**
      * Controller state definitions
@@ -203,7 +203,7 @@ public class DiagnoseController {
      * EventHandler for the {@link #btnDiagCreate}.
      */
     @FXML
-    void clickedDiagCreate() {
+    private void clickedDiagCreate() {
         this.state.set(State.CREATE);
     }
 
@@ -211,7 +211,7 @@ public class DiagnoseController {
      * EventHandler for the {@link #btnDiagCancel}.
      */
     @FXML
-    void clickedDiagCancel() {
+    private void clickedDiagCancel() {
 
     }
 

src/main/java/de/uniluebeck/mi/projmi6/controller/FallController.java

@@ -33,7 +33,7 @@ public class FallController {
      * Controllers current state.
      */
     private final SimpleObjectProperty<State> state = new SimpleObjectProperty<>(State.VIEW);
-    private MainController mainController;
+    private final MainController mainController;
     @FXML
     private DateTimePicker dtTmAufnahme, dtTmEntlassung;
     @FXML
@@ -248,7 +248,7 @@ public class FallController {
     /**
      * Toggle controller state to edit
      */
-    public void editFall() {
+    private void editFall() {
         this.state.set(State.EDIT);
     }
 

src/main/java/de/uniluebeck/mi/projmi6/controller/LogController.java

@@ -75,7 +75,7 @@ public class LogController {
         //Change cell factory cuz we need scrollable fields
         colLogMessage.setCellFactory(column ->
                 new TableCell<HL7LogEntry, String>() {
-                    private TextArea textArea = new TextArea();
+                    private final TextArea textArea = new TextArea();
 
                     {
                         textArea.setEditable(false);

src/main/java/de/uniluebeck/mi/projmi6/controller/MainController.java

@@ -27,14 +27,14 @@ public class MainController {
     /**
      * The subcontroller instances
      */
-    private FallController fallController;
-    private DiagnoseController diagnoseController;
-    private PatientTablesController patientTablesController;
-    private SettingsController settingsController;
-    private StationsHistorieController stationsHistorieController;
-    private UntersuchungenController untersuchungenController;
-    private LogController logController;
-    private MessageController messageController;
+    private  FallController fallController;
+    private  DiagnoseController diagnoseController;
+    private  PatientTablesController patientTablesController;
+    private  SettingsController settingsController;
+    private  StationsHistorieController stationsHistorieController;
+    private  UntersuchungenController untersuchungenController;
+    private  LogController logController;
+    private  MessageController messageController;
 
 
     /**

src/main/java/de/uniluebeck/mi/projmi6/controller/MessageController.java

@@ -23,7 +23,7 @@ public class MessageController {
     /**
      * The superior controller
      */
-    final MainController mainController;
+    private final MainController mainController;
 
     /**
      * The list of unread messages

src/main/java/de/uniluebeck/mi/projmi6/controller/PatientEditorController.java

@@ -25,7 +25,7 @@ public class PatientEditorController {
     /**
      * The superior controller
      */
-    private MainController mainController;
+    private final MainController mainController;
 
     @FXML
     private Label patChangeTime, patChanger, patCreator, patCreateTime;

src/main/java/de/uniluebeck/mi/projmi6/controller/PatientTablesController.java

@@ -73,8 +73,8 @@ public class PatientTablesController {
     @FXML
     private Tab stationOverviewTab, patientOverviewTab;
 
-    private ObservableList<StationsUebersichtsItem> stationsUebersicht = FXCollections.observableArrayList();
-    private FilteredList<StationsUebersichtsItem> stationsUebersichtsItemFilteredList = new FilteredList<StationsUebersichtsItem>(stationsUebersicht,
+    private final ObservableList<StationsUebersichtsItem> stationsUebersicht = FXCollections.observableArrayList();
+    private final FilteredList<StationsUebersichtsItem> stationsUebersichtsItemFilteredList = new FilteredList<StationsUebersichtsItem>(stationsUebersicht,
             item -> item.getStationEntlassung() == null || item.getStationEntlassung().isAfter(LocalDate.now()));
 
     private Task loadStationsHistorieTask = null;

src/main/java/de/uniluebeck/mi/projmi6/controller/SettingsController.java

@@ -30,7 +30,7 @@ public class SettingsController {
     /**
      * A pointer to the applications main controller
      */
-    private MainController mainController;
+    private final MainController mainController;
     /**
      * The button that for saving the data in the text fields.
      */
@@ -61,7 +61,7 @@ public class SettingsController {
      * @param ip The string to be validated.
      * @return true if ip is a valid ip address, otherwise false
      */
-    public static boolean validateIpString(final String ip) {
+    private static boolean validateIpString(final String ip) {
         return PATTERN.matcher(ip).matches();
     }
 

src/main/java/de/uniluebeck/mi/projmi6/controller/StationsHistorieController.java

@@ -31,7 +31,7 @@ import java.util.stream.Collectors;
  */
 public class StationsHistorieController {
 
-    private MainController mainController;
+    private final MainController mainController;
 
     @FXML
     private GridPane fields;
@@ -51,7 +51,7 @@ public class StationsHistorieController {
     private ComboBox<Station> cmbStation;
     @FXML
     private ComboBox<String> cmbAbteilung;
-    private SimpleObjectProperty<ObservableList<StationsHistorie>> stationsHistorie =
+    private final SimpleObjectProperty<ObservableList<StationsHistorie>> stationsHistorie =
             new SimpleObjectProperty<>();
 
 
@@ -59,7 +59,7 @@ public class StationsHistorieController {
      * Definition of the controllers states.
      */
     public enum State {
-        CREATE, EDIT, VIEW;
+        CREATE, EDIT, VIEW
     }
 
     /**

src/main/java/de/uniluebeck/mi/projmi6/controller/UntersuchungenController.java

@@ -31,11 +31,11 @@ public class UntersuchungenController {
     /**
      * The list of examinations that is shown in the views that belong to the controller.
      */
-    private SimpleObjectProperty<ObservableList<Untersuchung>> untersuchungen = new SimpleObjectProperty<>();
+    private final SimpleObjectProperty<ObservableList<Untersuchung>> untersuchungen = new SimpleObjectProperty<>();
     /**
      * A pointer to the main controller.
      */
-    private MainController mainController;
+    private final MainController mainController;
     @FXML
     private Button btnUntsCancel, btnUntsCreate, btnUntsSave, btnUntsAbort;
     @FXML