diff --git a/src/main/java/projekt/enigma/App.java b/src/main/java/projekt/enigma/App.java
new file mode 100644
index 0000000000000000000000000000000000000000..f53dcdf988f86a5bedf676f34009bdcaf9fcf9d5
--- /dev/null
+++ b/src/main/java/projekt/enigma/App.java
@@ -0,0 +1,66 @@
+package projekt.enigma;
+
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+import java.io.IOException;
+
+/**
+ * JavaFX App
+ */
+public class App extends Application {
+
+	/**
+	 * TODO Dokumentieren
+	 */
+	private static Scene scene;
+
+	/**
+	 * TODO Dokumentieren
+	 *
+	 * @param fxml
+	 * @throws IOException
+	 */
+	static void setRoot(String fxml) throws IOException {
+		scene.setRoot(loadFXML(fxml));
+	}
+
+	/**
+	 * TODO Dokumentieren
+	 *
+	 * @param fxml
+	 * @return
+	 * @throws IOException
+	 */
+	private static Parent loadFXML(String fxml) throws IOException {
+		FXMLLoader fxmlLoader = new FXMLLoader(App.class.getResource(fxml + ".fxml"));
+		return fxmlLoader.load();
+	}
+
+	/**
+	 * TODO Dokumentieren
+	 *
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		Application.launch();
+	}
+
+	/**
+	 * TODO Dokumentieren
+	 *
+	 * @param stage
+	 * @throws IOException
+	 */
+	@Override
+	public void start(Stage stage) throws IOException {
+		scene = new Scene(loadFXML("kenngruppe"));
+		stage.setScene(scene);
+		stage.setResizable(true);
+		stage.show();
+	}
+
+}
diff --git a/src/main/java/projekt/enigma/KenngruppeController.java b/src/main/java/projekt/enigma/KenngruppeController.java
index 79ed1a081019f57c7970c721171b445873fa48e7..57d0be7a5a771caed15905594803cff20cb2d973 100644
--- a/src/main/java/projekt/enigma/KenngruppeController.java
+++ b/src/main/java/projekt/enigma/KenngruppeController.java
@@ -1,56 +1,39 @@
 package projekt.enigma;
 
-import java.awt.event.ActionEvent;
 import java.io.IOException;
 
 import javafx.fxml.FXML;
-import javafx.scene.Node;
-import javafx.scene.Scene;
-import javafx.scene.control.Button;
 import javafx.scene.control.TextField;
-import javafx.stage.Stage;
 import projekt.enigma.model.Codierer;
 
-
 public class KenngruppeController {
     private Codierer cod = new Codierer();
 
-    private Stage stage;
-
-
     @FXML
     private TextField tfKenngruppe;
 
-    @FXML
-    private Button btnswitch;
-
-//    @FXML
-//    private void switchToPrimary() throws IOException {
-//        if (tfKenngruppe.getText().length() <= 8) {
-//            for (char c : tfKenngruppe.getText().toCharArray()) {
-//                if (c == 'a' || c == 'b' || c == 'c' || c == 'd' || c == 'e' || c == 'f' || c == 'g' || c == 'h' || c == 'i' || c == 'j' || c == 'k' || c == 'l' || c == 'm' || c == 'n' || c == 'o' || c == 'p' || c == 'q' || c == 'r' || c == 's' || c == 't' || c == 'u' || c == 'v' || c == 'w' || c == 'x' || c == 'y' || c == 'z') {
-//                    cod.setKenngruppe(tfKenngruppe.getText());
-//
-//                    App.setRoot("gui");
-//                }
-//            }
-//        } else {
-//            tfKenngruppe.setStyle("-fx-background-color:#FF0000");
-//            tfKenngruppe.setText("Fehlerhafte Kenngruppe!");
-//        }
-//    }
-    private Scene secondScene;
-
-    public void setSecondScene(Scene scene){
-        secondScene=scene;
-    }
+    //TODO: Doku
 
+    /**
+     * Beim drücken der Taste wird überprüft ob die eingegebene Kenngruppe weniger als 9 Zeichen hat und ob die
+     * eingegebenen Zeichen nur Buchstaben sind.
+     * Bei einer gültigen Eingabe wird die eingegebene Kenngruppe gespeichert und die Enigma-Anwendung gestartet
+     * @throws IOException :
+     */
     @FXML
-    private void switchToPrimary(ActionEvent ae) throws IOException {
-        Stage primaryStage = (Stage)((Node)ae.getSource()).getScene().getWindow();
-        primaryStage.setScene(secondScene);
+    private void btnGui() throws IOException {
+        if (tfKenngruppe.getText().length() <9) {
+            for (char c : tfKenngruppe.getText().toCharArray()) {
+                if (c == 'a' || c == 'b' || c == 'c' || c == 'd' || c == 'e' || c == 'f' || c == 'g' || c == 'h' || c == 'i' || c == 'j' || c == 'k' || c == 'l' || c == 'm' || c == 'n' || c == 'o' || c == 'p' || c == 'q' || c == 'r' || c == 's' || c == 't' || c == 'u' || c == 'v' || c == 'w' || c == 'x' || c == 'y' || c == 'z'||c == 'A' || c == 'B' || c == 'C' || c == 'D' || c == 'E' || c == 'F' || c == 'G' || c == 'H' || c == 'I' || c == 'J' || c == 'K' || c == 'L' || c == 'M' || c == 'N' || c == 'O' || c == 'P' || c == 'Q' || c == 'R' || c == 'S' || c == 'T' || c == 'U' || c == 'V' || c == 'W' || c == 'X' || c == 'Y' || c == 'Z') {
+                    cod.setKenngruppe(tfKenngruppe.getText());
+
+                    //setzt
+                    App.setRoot("gui");
+                }
+            }
+        } else {
+            tfKenngruppe.setStyle("-fx-background-color:#FF0000");
+            tfKenngruppe.setText("Fehlerhafte Kenngruppe!");
+        }
     }
-
-
-
     }
diff --git a/src/main/resources/projekt/enigma/gui.fxml b/src/main/resources/projekt/enigma/gui.fxml
index 6e28fe1c37b7a09e80b5a9367fbfd409598af45b..541232d5cffb09e2bcd7a2c7d5a910faed867ba6 100644
--- a/src/main/resources/projekt/enigma/gui.fxml
+++ b/src/main/resources/projekt/enigma/gui.fxml
@@ -7,26 +7,14 @@
 <?import javafx.scene.control.TextField?>
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.layout.ColumnConstraints?>
-<?import javafx.scene.layout.FlowPane?>
 <?import javafx.scene.layout.GridPane?>
 <?import javafx.scene.layout.RowConstraints?>
-<?import javafx.scene.layout.VBox?>
 <?import javafx.scene.shape.Circle?>
 <?import javafx.scene.text.Font?>
 
 <AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="677.0" prefWidth="962.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="projekt.enigma.GuiController">
    <children>
-      <AnchorPane layoutX="241.0" layoutY="130.0" prefHeight="111.0" prefWidth="487.0" AnchorPane.leftAnchor="241.0" AnchorPane.rightAnchor="240.0">
-         <children>
-            <VBox layoutX="72.0" layoutY="-89.0" prefHeight="210.0" prefWidth="377.0" AnchorPane.bottomAnchor="-10.0" AnchorPane.leftAnchor="72.0" AnchorPane.rightAnchor="37.0" AnchorPane.topAnchor="-89.0">
-               <children>
-                  <TextField fx:id="tfKlartext" editable="false" prefHeight="80.0" prefWidth="377.0" />
-                  <Label prefHeight="17.0" prefWidth="385.0" />
-                  <TextField fx:id="tfCodiert" editable="false" prefHeight="79.0" prefWidth="377.0" />
-                  <Label prefHeight="17.0" prefWidth="385.0" />
-               </children>
-            </VBox>
-         </children></AnchorPane>
+      <AnchorPane layoutX="207.0" layoutY="-111.0" prefHeight="111.0" prefWidth="487.0" AnchorPane.leftAnchor="207.0" AnchorPane.rightAnchor="274.0" />
       <GridPane layoutX="23.0" layoutY="60.0" prefHeight="158.0" prefWidth="237.0" AnchorPane.leftAnchor="23.0" AnchorPane.topAnchor="60.0">
         <columnConstraints>
             <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
@@ -92,13 +80,6 @@
       </MenuButton>
          </children>
       </GridPane>
-      <FlowPane layoutX="736.0" layoutY="51.0" prefHeight="173.0" prefWidth="195.0" AnchorPane.rightAnchor="36.0" AnchorPane.topAnchor="51.0">
-         <children>
-            <Button fx:id="btnEmpfangen" mnemonicParsing="false" onAction="#gedrueckteTaste" prefHeight="80.0" prefWidth="195.0" text="Funkspruch empfangen" />
-            <Label prefHeight="17.0" prefWidth="195.0" />
-            <Button fx:id="btnSenden" mnemonicParsing="false" onAction="#gedrueckteTaste" prefHeight="80.0" prefWidth="195.0" text="An Funker senden" />
-         </children>
-      </FlowPane>
       <GridPane layoutX="23.0" layoutY="222.0" prefHeight="60.0" prefWidth="270.0" AnchorPane.leftAnchor="23.0" AnchorPane.topAnchor="222.0">
         <columnConstraints>
           <ColumnConstraints hgrow="SOMETIMES" maxWidth="206.0" minWidth="10.0" prefWidth="102.0" />
@@ -690,5 +671,34 @@
             </Label>
          </children>
       </GridPane>
+      <Label layoutX="684.0" layoutY="-164.0" prefHeight="17.0" prefWidth="195.0" />
+      <GridPane layoutX="297.0" layoutY="64.0" prefHeight="168.0" prefWidth="585.0">
+        <columnConstraints>
+          <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
+          <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
+        </columnConstraints>
+        <rowConstraints>
+          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+        </rowConstraints>
+         <children>
+            <TextField fx:id="tfKlartext" editable="false" prefHeight="70.0" prefWidth="293.0">
+               <GridPane.margin>
+                  <Insets />
+               </GridPane.margin>
+            </TextField>
+            <TextField fx:id="tfCodiert" editable="false" prefHeight="70.0" prefWidth="293.0" GridPane.rowIndex="1" />
+            <Button fx:id="btnSenden" alignment="CENTER" contentDisplay="RIGHT" mnemonicParsing="false" onAction="#gedrueckteTaste" prefHeight="70.0" prefWidth="195.0" text="An Funker senden" textAlignment="CENTER" GridPane.columnIndex="1">
+               <GridPane.margin>
+                  <Insets left="80.0" />
+               </GridPane.margin>
+            </Button>
+            <Button fx:id="btnEmpfangen" mnemonicParsing="false" onAction="#gedrueckteTaste" prefHeight="70.0" prefWidth="195.0" text="Funkspruch empfangen" GridPane.columnIndex="1" GridPane.rowIndex="1">
+               <GridPane.margin>
+                  <Insets left="80.0" />
+               </GridPane.margin>
+            </Button>
+         </children>
+      </GridPane>
    </children>
 </AnchorPane>
diff --git a/src/main/resources/projekt/enigma/kenngruppe.fxml b/src/main/resources/projekt/enigma/kenngruppe.fxml
index 8beeef733c27bdb39769eb2c544cbf3696c55a9a..019c9c177e31b671dfd904d3396474510999c159 100644
--- a/src/main/resources/projekt/enigma/kenngruppe.fxml
+++ b/src/main/resources/projekt/enigma/kenngruppe.fxml
@@ -14,7 +14,7 @@
             <Label prefHeight="62.0" prefWidth="209.0" />
             <TextField fx:id="tfKenngruppe" />
             <Label prefHeight="39.0" prefWidth="209.0" />
-            <Button fx:id="btnswitch" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" onAction="#switchToPrimary" prefHeight="25.0" prefWidth="212.0" text="Kenngruppe setzen!" />
+            <Button maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" onAction="#btnGui" prefHeight="25.0" prefWidth="212.0" text="Kenngruppe setzen!" />
          </children>
       </VBox>
    </children>