src/main/java/de/hitec/nhplus/nurse/AllNurseController.java

@@ -1,18 +1,30 @@
 package de.hitec.nhplus.nurse;
 
+import static de.hitec.nhplus.utils.Validator.*;
+
 import de.hitec.nhplus.datastorage.DaoFactory;
+import javafx.beans.value.ChangeListener;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
+import javafx.scene.control.Button;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
+import javafx.scene.control.TextField;
 import javafx.scene.control.cell.PropertyValueFactory;
 import javafx.scene.control.cell.TextFieldTableCell;
 
 import java.sql.SQLException;
 
 public class AllNurseController {
-
+    @FXML
+    public TextField textFieldSurname;
+    @FXML
+    public TextField textFieldFirstname;
+    @FXML
+    public TextField textFieldPhoneNumber;
+    @FXML
+    public Button buttonAdd;
     @FXML
     private TableView<Nurse> tableView;
     @FXML
@@ -43,6 +55,20 @@ public class AllNurseController {
         this.columnPhoneNumber.setCellFactory(TextFieldTableCell.forTableColumn());
 
         this.tableView.setItems(this.nurses);
+
+        this.buttonAdd.setDisable(true);
+        ChangeListener<String> inputNewNurseValidationListener = (observableValue, oldText, newText)->
+        {
+            boolean isValid = isValidFirstName(this.textFieldFirstname.getText())
+                && isValidSurName(this.textFieldSurname.getText())
+                && isValidPhoneNumber(this.textFieldPhoneNumber.getText());
+
+            AllNurseController.this.buttonAdd.setDisable(!isValid);
+        };
+
+        this.textFieldFirstname.textProperty().addListener(inputNewNurseValidationListener);
+        this.textFieldSurname.textProperty().addListener(inputNewNurseValidationListener);
+        this.textFieldPhoneNumber.textProperty().addListener(inputNewNurseValidationListener);
     }
 
     private void readAllAndShowInTableView(){
@@ -54,4 +80,25 @@ public class AllNurseController {
             exception.printStackTrace();
         }
     }
+    @FXML
+    public void handleAdd(){
+        String surname=this.textFieldSurname.getText();
+        String firstName=this.textFieldFirstname.getText();
+        String phoneNumber=this.textFieldPhoneNumber.getText();
+        try {
+            this.dao.create(new Nurse(firstName, surname, phoneNumber));
+        }
+        catch (SQLException exception){
+            exception.printStackTrace();
+        }
+        readAllAndShowInTableView();
+        clearTextfields();
+    }
+
+    private void clearTextfields() {
+        this.textFieldFirstname.clear();
+        this.textFieldSurname.clear();
+        this.textFieldPhoneNumber.clear();
+    }
+
 }

src/main/java/de/hitec/nhplus/utils/Validator.java

@@ -68,6 +68,9 @@ public class Validator
     public static boolean isValidSurName(String text){
         return !text.isBlank();
     }
+    public static boolean isValidPhoneNumber(String text){
+        return !text.isBlank();
+    }
     public static boolean isValidCareLevel(String text){
         return !text.isBlank();
     }

src/main/resources/de/hitec/nhplus/nurse/AllNurseView.fxml

@@ -72,6 +72,7 @@
                     <Button
                             fx:id="buttonAdd"
                             mnemonicParsing="false"
+                            onAction="#handleAdd"
                             prefWidth="90.0"
                             text="Hinzufügen"
                     />