Merge branch 'main' of https://github.com/SageTheDM/IMS-java

Code/Steiner/CO2-Daten-Projekt-V2/src/App.java

@@ -12,14 +12,37 @@ public class App {
     public static final Lesson[][][] timeTable = new Lesson[ROOM_COUNT][DAY_COUNT][LESSON_COUNT];
     private static final Teacher[] teachers = new Teacher[Teacher.nameMap.size()];
 
-    // URLs for fetching CO2 data
+    // Date constants
-    private static final String ROOM_39_URL = "https://api.thingspeak.com/channels/1521262/feeds.csv?results=8000";
+    private static final int START_YEAR = 2024;
-    private static final String ROOM_38_URL = "https://api.thingspeak.com/channels/1364580/feeds.csv?results=8000";
+    private static final int START_MONTH = 11; // November
-    private static final String ROOM_37_URL = "https://api.thingspeak.com/channels/1521263/feeds.csv?results=8000";
+    private static final int START_DAY = 4;
+    private static final String START_DATE = String.format("%d-%02d-%02d%%2000:00:00", START_YEAR, START_MONTH,
+            START_DAY);
 
-    private static final List<Co2Data> room39Data = Co2Data.getData(ROOM_39_URL, 39);
+    private static final int END_YEAR = 2024;
-    private static final List<Co2Data> room38Data = Co2Data.getData(ROOM_38_URL, 38);
+    private static final int END_MONTH = 11; // November
-    private static final List<Co2Data> room37Data = Co2Data.getData(ROOM_37_URL, 37);
+    private static final int END_DAY = 8;
+    private static final String END_DATE = String.format("%d-%02d-%02d%%2000:00:00", END_YEAR, END_MONTH, END_DAY);
+
+    // Room channel numbers
+    private static final int ROOM_39_NUMBER = 1521262;
+    private static final int ROOM_38_NUMBER = 1364580;
+    private static final int ROOM_37_NUMBER = 1521263;
+
+    // Room URLs
+    private static final String ROOM_39_URL = createUrl(ROOM_39_NUMBER);
+    private static final String ROOM_38_URL = createUrl(ROOM_38_NUMBER);
+    private static final String ROOM_37_URL = createUrl(ROOM_37_NUMBER);
+
+    // Room data
+    private static final List<Co2Data> ROOM_39_DATA = Co2Data.getData(ROOM_39_URL, 39);
+    private static final List<Co2Data> ROOM_38_DATA = Co2Data.getData(ROOM_38_URL, 38);
+    private static final List<Co2Data> ROOM_37_DATA = Co2Data.getData(ROOM_37_URL, 37);
+
+    private static String createUrl(int channelNumber) {
+        return String.format("https://api.thingspeak.com/channels/%d/feeds.csv?start=%s&end=%s", channelNumber,
+                START_DATE, END_DATE);
+    }
 
     // #region Initialization
     private static void initializeTeachers() {
@@ -36,23 +59,22 @@ public class App {
     }
 
     // #region Calculation
-    private static void calculatePoints(List<Co2Data> data) {
+    private static void calculatePoints(List<Co2Data> data, int roomNumber) {
         for (Co2Data co2Data : data) {
             Date temp = co2Data.getDate();
             int intHour = temp.getHour();
             int intMinute = temp.getMinute();
-            int intDay = temp.getDay();
             if (FillTable.isBreak(intHour, intMinute)) {
-                String whatBreak = FillTable.whatBreakIsIt(intHour, intMinute, intDay);
+                String whatBreak = FillTable.whatBreakIsIt(intHour, intMinute);
+                int[] time = FillTable.whatTime(intHour, intMinute);
 
                 switch (whatBreak) {
                     case "short":
-                        calculateFiveMinuteBreakPoints(co2Data);
+                        calculateFiveMinuteBreakPoints(data, time, roomNumber);
                         break;
                     case "long":
-                        calculateLongerBreakPoints(co2Data);
+                        calculateLongerBreakPoints(data, time, roomNumber);
                         break;
-
                     default:
                         break;
                 }
@@ -60,15 +82,105 @@ public class App {
         }
     }
 
-    private static void calculateFiveMinuteBreakPoints(Co2Data data) {
+    // #region 5min
-        calculateBonusPoints(data);
+    private static int calculateFiveMinuteBreakPoints(List<Co2Data> data, int[] time, int roomNumber) {
+        // Calculate the time range for the break (e.g., a 5-minute break)
+        int startMinute = time[0];
+        int endMinute = time[1];
+
+        int points = 5; // Start with maximum points
+
+        // Loop over each minute in the break and check the CO2 level
+        for (int i = startMinute; i < endMinute; i++) {
+            // Get the CO2 data for the current minute (using the data list)
+            Co2Data minuteData = getCo2DataForMinute(data, i); // data is already a List<Co2Data>
+
+            if (minuteData != null) {
+                int currentCo2 = minuteData.getCo2Level();
+                Co2Data previousMinuteData = getCo2DataForMinute(data, i - 1); // data is a List<Co2Data>
+
+                if (previousMinuteData != null) {
+                    int previousCo2 = previousMinuteData.getCo2Level();
+
+                    // If CO2 level doesn't decrease, subtract points
+                    if (currentCo2 >= previousCo2) {
+                        points--;
+                    }
+                }
+            }
         }
 
-    private static void calculateLongerBreakPoints(Co2Data data) {
+        // After calculating the points, consider any bonus points for teacher switch or
-        calculateBonusPoints(data);
+        // other criteria
+        points += calculateBonusPoints(data, time, roomNumber);
+
+        return Math.max(points, 0); // Ensure that points don't go below zero
     }
 
-    private static void calculateBonusPoints(Co2Data data) {
+    // #region 5+ min
+    private static int calculateLongerBreakPoints(List<Co2Data> data, int[] time, int roomNumber) {
+        // Take the time for the entire break
+        int startMinute = time[0];
+        int endMinute = time[1];
+
+        int points = 10; // Start with maximum points for longer break
+
+        // Loop over each minute in the break and check the CO2 level
+        for (int i = startMinute; i < endMinute; i++) {
+            // Get the CO2 data for the current minute (using the data list)
+            Co2Data minuteData = getCo2DataForMinute(data, i); // data is already a List<Co2Data>
+
+            if (minuteData != null) {
+                int currentCo2 = minuteData.getCo2Level();
+                Co2Data previousMinuteData = getCo2DataForMinute(data, i - 1); // data is a List<Co2Data>
+
+                if (previousMinuteData != null) {
+                    int previousCo2 = previousMinuteData.getCo2Level();
+
+                    // If CO2 level doesn't decrease, subtract points
+                    if (currentCo2 >= previousCo2) {
+                        points--;
+                    }
+                }
+            }
+        }
+
+        // After calculating the points, consider any bonus points for teacher switch or
+        // other criteria
+        points += calculateBonusPoints(data, time, roomNumber);
+
+        return Math.max(points, 0); // Ensure that points don't go below zero
+    }
+
+    // #region bonus
+    private static int calculateBonusPoints(List<Co2Data> data, int[] time, int roomNumber) {
+        // Check if the next lesson isn't lunch or the same teacher (if the next lesson
+        // is lunch, no bonus points possible)
+        boolean isTeacherChange = isTeacherChange(data, roomNumber, time); // Check if the teacher is changing
+        boolean isNextLessonLunch = FillTable.isNextLessonLunch();
+
+        if (!isNextLessonLunch && isTeacherChange) {
+            return 5; // Bonus points for teacher switch
+        } else {
+            return 0; // No bonus points
+        }
+    }
+
+    // #region checks
+    private static boolean isTeacherChange(List<Co2Data> data, int roomNumber, int[] time) {
+        // go through the lesson table of that day and time for the room
+        // check if the last teacher in the room equals itself or another teacher
+        return false; // Placeholder logic (to be implemented based on the timetable)
+    }
+
+    private static Co2Data getCo2DataForMinute(List<Co2Data> data, int minute) {
+        // Logic to get the CO2 data for a specific minute in the break
+        for (Co2Data co2Data : data) {
+            if (co2Data.getDate().getMinute() == minute) {
+                return co2Data;
+            }
+        }
+        return null; // Return null if no data matches
     }
 
     // #region Sorting Printing
@@ -106,10 +218,8 @@ public class App {
         while (true) {
             if (scanner.hasNextInt()) {
                 return scanner.nextInt();
-            } else {
-                System.out.println("Invalid input. Please enter a number.");
-                scanner.next();
             }
+            scanner.next(); // Clear invalid input
         }
     }
 
@@ -117,7 +227,8 @@ public class App {
         System.out.println("Point calculation explanation:");
         System.out.println("1. Up to 5 points for keeping the window open during a small pause.");
         System.out.println("2. Up to 10 points for long pauses, depending on window usage.");
-        System.out.println("3. 5 bonus points for teacher switches in the room.");
+        System.out.println("3. 5 bonus points for teacher switches in classrooms.");
+        System.out.println("4. Deduct points if CO2 levels are too high.");
     }
 
     private static void printShutDown() {
@@ -127,17 +238,16 @@ public class App {
             try {
                 Thread.sleep(1000);
             } catch (InterruptedException e) {
-                Thread.currentThread().interrupt();
+                e.printStackTrace();
             }
         }
-        System.out.println("Goodbye!");
     }
 
     // @TODO: remove this before hand-in deadline
     public static void debbugingValueLists(List<Co2Data> data) {
         // Debugging co2Data
         int index = 0;
-        for (Co2Data a : room37Data) {
+        for (Co2Data a : data) {
             System.out.println(a.toString());
             index++;
         }
@@ -150,16 +260,16 @@ public class App {
     public static void main(String[] args) {
         boolean debbugingList = false;
         if (debbugingList) {
-            debbugingValueLists(room37Data);
+            debbugingValueLists(ROOM_37_DATA);
             // debbugingValueLists(room38Data);
             // debbugingValueLists(room39Data);
         } else {
             System.out.println("Calculations in process please do not shut off...");
             fillInTimeTable();
             initializeTeachers();
-            calculatePoints(room37Data);
+            calculatePoints(ROOM_37_DATA, 37);
-            calculatePoints(room38Data);
+            calculatePoints(ROOM_38_DATA, 38);
-            calculatePoints(room39Data);
+            calculatePoints(ROOM_39_DATA, 39);
             sortTeachers();
             printTeachers();
             while (true) {

Code/Steiner/CO2-Daten-Projekt-V2/src/Date.java

@@ -1,6 +1,3 @@
-import java.util.Calendar;
-import java.util.GregorianCalendar;
-
 public class Date {
     // #region Fields
     private int day;
@@ -42,34 +39,9 @@ public class Date {
         return minute;
     }
 
-    // #region Helper Method to Check Daylight Saving Time
-    private boolean isDaylightSavingTime() {
-        Calendar calendar = new GregorianCalendar();
-        calendar.set(year, month - 1, day); // Month is 0-based in Calendar
-
-        // Last Sunday in March (DST starts)
-        Calendar lastSundayInMarch = new GregorianCalendar(year, Calendar.MARCH, 31);
-        lastSundayInMarch.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
-        lastSundayInMarch.add(Calendar.DATE, -7); // Go back to last Sunday of March
-
-        // Last Sunday in October (DST ends)
-        Calendar lastSundayInOctober = new GregorianCalendar(year, Calendar.OCTOBER, 31);
-        lastSundayInOctober.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
-        lastSundayInOctober.add(Calendar.DATE, -7); // Go back to last Sunday of October
-
-        // Check if the current date is within the DST period
-        return calendar.after(lastSundayInMarch) && calendar.before(lastSundayInOctober);
-    }
-
     // #region Adjust UTC to Switzerland Time
     private void adjustForSwitzerlandTime() {
-        if (isDaylightSavingTime()) {
-            // Switzerland is UTC +2 during DST (CEST)
-            hour += 2;
-        } else {
-            // Switzerland is UTC +1 during Standard Time (CET)
         hour += 1;
-        }
 
         // Adjust if the hour exceeds 24 or falls below 0
         if (hour >= 24) {

Code/Steiner/CO2-Daten-Projekt-V2/src/FillTable.java

@@ -16,7 +16,8 @@ public class FillTable {
         int dayIndex = getDayIndex(day);
         for (int i = 0; i < teacherShortNames.length && i < startTime.length && i < endTime.length; i++) {
             Teacher teacher = new Teacher(teacherShortNames[i]); // Initialize Teacher with shortform
-            App.timeTable[roomIndex][dayIndex][i] = new Lesson(roomIndex, teacher.getName(), startTime[i], endTime[i],
+            App.timeTable[roomIndex][dayIndex][i] = new Lesson(roomIndex, teacher.getName(), startTime[i],
+                    endTime[i],
                     day);
         }
     }
@@ -83,12 +84,76 @@ public class FillTable {
                 "Friday", START_TIMES, END_TIMES, roomIndex);
     }
 
-    static boolean isBreak(int intHour, int intMinute) {
+    // #region Check Methods
-        // Check if the time is between 7 AM and 5 PM
+    static int[] whatTime(int intHour, int intMinute) {
-        if (intHour >= 7 && intHour <= 17) {
+        int[] result = new int[2]; // [most recent end time, next start time]
-            // Check if the time falls between any lesson start and end times
+        result[0] = -1; // Initialize to -1 (no previous end time found)
+        result[1] = -1; // Initialize to -1 (no next start time found)
+
+        for (int i = 0; i < END_TIMES.length; i++) {
+            // Parse END_TIMES[i]
+            String[] endParts = END_TIMES[i].split(":");
+            int endHour = Integer.parseInt(endParts[0]);
+            int endMinute = Integer.parseInt(endParts[1]);
+
+            // Parse START_TIMES[i]
+            String[] startParts = START_TIMES[i].split(":");
+            int startHour = Integer.parseInt(startParts[0]);
+            int startMinute = Integer.parseInt(startParts[1]);
+
+            // Check for the most recent end time
+            if ((intHour > endHour) || (intHour == endHour && intMinute >= endMinute)) {
+                result[0] = i; // Track the most recent lesson's end time index
+            }
+
+            // Check for the next start time
+            if ((intHour < startHour) || (intHour == startHour && intMinute < startMinute)) {
+                result[1] = i; // Track the next lesson's start time index
+                break; // No need to continue since START_TIMES is sorted
+            }
+        }
+
+        return result;
+    }
+
+    static boolean isNextLessonLunch(int intHour, int intMinute, int roomIndex) {
+        int currentTimeInMinutes = intHour * 60 + intMinute;
+        int nextLessonIndex = getNextLessonIndex(currentTimeInMinutes, roomIndex);
+
+        if (nextLessonIndex == -1) {
+            return false;
+        }
+
+        String nextLessonStartTime = START_TIMES[nextLessonIndex];
+        String[] nextLessonStartParts = nextLessonStartTime.split(":");
+        int nextLessonStartInMinutes = Integer.parseInt(nextLessonStartParts[0]) * 60
+                + Integer.parseInt(nextLessonStartParts[1]);
+
+        if (nextLessonStartInMinutes > currentTimeInMinutes) {
+            String teacherShortName = App.timeTable[roomIndex][getDayIndex("Monday")][nextLessonIndex]
+                    .getTeacherInitials();
+            return teacherShortName.equals("Lunch");
+        }
+
+        return false;
+    }
+
+    private static int getNextLessonIndex(int currentTimeInMinutes, int roomIndex) {
+        for (int i = 0; i < START_TIMES.length; i++) {
+            String[] startParts = START_TIMES[i].split(":");
+            int startTimeInMinutes = Integer.parseInt(startParts[0]) * 60 + Integer.parseInt(startParts[1]);
+
+            if (startTimeInMinutes > currentTimeInMinutes) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    static boolean isBreak(int intHour, int intMinute) {
+        if (intHour >= 7 && intHour <= 17) {
             for (int i = 0; i < START_TIMES.length; i++) {
-                // Split the start and end times into hours and minutes
                 String[] startTime = START_TIMES[i].split(":");
                 String[] endTime = END_TIMES[i].split(":");
 
@@ -97,19 +162,32 @@ public class FillTable {
                 int endHour = Integer.parseInt(endTime[0]);
                 int endMinute = Integer.parseInt(endTime[1]);
 
-                // Check if the given time is during the current lesson
                 if ((intHour > startHour || (intHour == startHour && intMinute >= startMinute)) &&
                         (intHour < endHour || (intHour == endHour && intMinute < endMinute))) {
-                    return false; // It's not a break, it's during a lesson
+                    return false;
                 }
             }
-            return true; // If no lessons match, it must be a break
+            return true;
+        }
+        return false;
     }
 
-        return false; // Time is outside of the school hours (7 AM to 6 PM roughly)
+    static String whatBreakIsIt(int intHour, int intMinute) {
+        String whatBreak = "";
+        for (int i = 0; i < END_TIMES.length; i++) {
+            String[] tempEnd = END_TIMES[i].split(":");
+            String[] tempStart = START_TIMES[i].split(":");
+            if (intHour >= Integer.parseInt(tempStart[0]) && intHour <= Integer.parseInt(tempEnd[0])) {
+                if (intMinute >= Integer.parseInt(tempStart[1])
+                        && intMinute <= Integer.parseInt(tempEnd[1])) {
+                    if (Integer.parseInt(tempEnd[1]) - Integer.parseInt(tempStart[1]) == 5) {
+                        whatBreak = "short";
+                    } else if (Integer.parseInt(tempEnd[1]) - Integer.parseInt(tempStart[1]) > 5) {
+                        whatBreak = "long";
                     }
-
+                }
-    static String whatBreakIsIt(int intHour, int intMinute, int intDay) {
+            }
-        return "No Break"; // If no break is found, return "No Break"
+        }
+        return whatBreak;
     }
 }

Code/ost/_10_steuerrechner/pom.xml

@@ -0,0 +1,51 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.example</groupId>
+    <artifactId>_10_steuerrechner</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-controls</artifactId>
+            <version>13</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-fxml</artifactId>
+            <version>13</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <release>11</release>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-maven-plugin</artifactId>
+                <version>0.0.6</version>
+                <executions>
+                    <execution>
+                        <!-- Default configuration for running -->
+                        <!-- Usage: mvn clean javafx:run -->
+                        <id>default-cli</id>
+                        <configuration>
+                            <mainClass>com.example.App</mainClass>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

Code/ost/_10_steuerrechner/src/main/java/com/example/App.java

@@ -0,0 +1,38 @@
+package com.example;
+
+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 {
+
+    private static Scene scene;
+
+    @Override
+    public void start(Stage stage) throws IOException {
+        scene = new Scene(loadFXML("primary"), 640, 480);
+        stage.setScene(scene);
+        stage.show();
+    }
+
+    static void setRoot(String fxml) throws IOException {
+        scene.setRoot(loadFXML(fxml));
+    }
+
+    private static Parent loadFXML(String fxml) throws IOException {
+        FXMLLoader fxmlLoader = new FXMLLoader(App.class.getResource(fxml + ".fxml"));
+        return fxmlLoader.load();
+    }
+
+    public static void main(String[] args) {
+        launch();
+    }
+
+}

Code/ost/_10_steuerrechner/src/main/java/com/example/PrimaryController.java

@@ -0,0 +1,12 @@
+package com.example;
+
+import java.io.IOException;
+import javafx.fxml.FXML;
+
+public class PrimaryController {
+
+    @FXML
+    private void switchToSecondary() throws IOException {
+        App.setRoot("secondary");
+    }
+}

Code/ost/_10_steuerrechner/src/main/java/com/example/SecondaryController.java

@@ -0,0 +1,12 @@
+package com.example;
+
+import java.io.IOException;
+import javafx.fxml.FXML;
+
+public class SecondaryController {
+
+    @FXML
+    private void switchToPrimary() throws IOException {
+        App.setRoot("primary");
+    }
+}

Code/ost/_10_steuerrechner/src/main/java/module-info.java

@@ -0,0 +1,7 @@
+module com.example {
+    requires javafx.controls;
+    requires javafx.fxml;
+
+    opens com.example to javafx.fxml;
+    exports com.example;
+}

Code/ost/_10_steuerrechner/src/main/resources/com/example/primary.fxml

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.ColumnConstraints?>
+<?import javafx.scene.layout.GridPane?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.RowConstraints?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.text.Text?>
+
+<GridPane alignment="CENTER" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/23.0.1" fx:controller="com.example.PrimaryController">
+  <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 minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+  </rowConstraints>
+   <children>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Netto" wrappingWidth="90.13000106811523">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Umsatzsteuer" GridPane.rowIndex="1">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Brutto" GridPane.rowIndex="2">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <TextField fx:id="inpNetto" promptText="Wert eingeben" GridPane.columnIndex="1">
+         <GridPane.margin>
+            <Insets right="20.0" />
+         </GridPane.margin>
+      </TextField>
+      <HBox alignment="CENTER_LEFT" prefHeight="100.0" prefWidth="200.0" GridPane.columnIndex="1" GridPane.rowIndex="1">
+         <children>
+            <TextField fx:id="inpTax" promptText="Wert eingeben">
+               <HBox.margin>
+                  <Insets right="20.0" />
+               </HBox.margin>
+            </TextField>
+            <Text strokeType="OUTSIDE" strokeWidth="0.0" text="\%" />
+         </children>
+      </HBox>
+      <VBox alignment="CENTER_LEFT" prefHeight="200.0" prefWidth="100.0" GridPane.columnIndex="1" GridPane.rowIndex="2">
+         <children>
+            <TextField fx:id="outBrutto">
+               <VBox.margin>
+                  <Insets right="20.0" top="20.0" />
+               </VBox.margin>
+            </TextField>
+            <Button mnemonicParsing="false" text="Berechnen">
+               <VBox.margin>
+                  <Insets top="20.0" />
+               </VBox.margin>
+            </Button>
+         </children>
+      </VBox>
+   </children>
+</GridPane>

Code/ost/_10_steuerrechner/src/main/resources/com/example/secondary.fxml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.Button?>
+<?import javafx.geometry.Insets?>
+
+<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.SecondaryController">
+    <children>
+        <Label text="Secondary View" />
+        <Button fx:id="secondaryButton" text="Switch to Primary View" onAction="#switchToPrimary" />
+    </children>
+    <padding>
+        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
+    </padding>
+</VBox>

Code/ost/_10_steuerrechner/target/classes/com/example/primary.fxml

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.ColumnConstraints?>
+<?import javafx.scene.layout.GridPane?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.RowConstraints?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.text.Text?>
+
+<GridPane alignment="CENTER" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/23.0.1" fx:controller="com.example.PrimaryController">
+  <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 minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+  </rowConstraints>
+   <children>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Netto" wrappingWidth="90.13000106811523">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Umsatzsteuer" GridPane.rowIndex="1">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Brutto" GridPane.rowIndex="2">
+         <GridPane.margin>
+            <Insets left="20.0" />
+         </GridPane.margin>
+      </Text>
+      <TextField fx:id="inpNetto" promptText="Wert eingeben" GridPane.columnIndex="1">
+         <GridPane.margin>
+            <Insets right="20.0" />
+         </GridPane.margin>
+      </TextField>
+      <HBox alignment="CENTER_LEFT" prefHeight="100.0" prefWidth="200.0" GridPane.columnIndex="1" GridPane.rowIndex="1">
+         <children>
+            <TextField fx:id="inpTax" promptText="Wert eingeben">
+               <HBox.margin>
+                  <Insets right="20.0" />
+               </HBox.margin>
+            </TextField>
+            <Text strokeType="OUTSIDE" strokeWidth="0.0" text="\%" />
+         </children>
+      </HBox>
+      <VBox alignment="CENTER_LEFT" prefHeight="200.0" prefWidth="100.0" GridPane.columnIndex="1" GridPane.rowIndex="2">
+         <children>
+            <TextField fx:id="outBrutto">
+               <VBox.margin>
+                  <Insets right="20.0" top="20.0" />
+               </VBox.margin>
+            </TextField>
+            <Button mnemonicParsing="false" text="Berechnen">
+               <VBox.margin>
+                  <Insets top="20.0" />
+               </VBox.margin>
+            </Button>
+         </children>
+      </VBox>
+   </children>
+</GridPane>

Code/ost/_10_steuerrechner/target/classes/com/example/secondary.fxml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.Button?>
+<?import javafx.geometry.Insets?>
+
+<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.SecondaryController">
+    <children>
+        <Label text="Secondary View" />
+        <Button fx:id="secondaryButton" text="Switch to Primary View" onAction="#switchToPrimary" />
+    </children>
+    <padding>
+        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
+    </padding>
+</VBox>