JavaFX Calendar View

Calendar.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.FlowPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>

<AnchorPane prefHeight="642.0" prefWidth="744.0" style="-fx-background-color: #f2fafc;" xmlns="http://javafx.com/javafx/15.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.example.calendarview.CalendarController">
   <FlowPane fx:id="calendar" hgap="10.0" layoutX="14.0" layoutY="116.0" prefHeight="498.0" prefWidth="716.0" vgap="5.0" />
   <HBox alignment="CENTER" layoutX="163.0" layoutY="14.0" prefHeight="44.0" prefWidth="419.0" spacing="5.0">
      <children>
         <Button mnemonicParsing="false" onAction="#backOneMonth" text="&lt;" />
         <Text fx:id="year" strokeType="OUTSIDE" strokeWidth="0.0" text="####">
            <font>
               <Font size="22.0" />
            </font>
         </Text>
         <Text fx:id="month" strokeType="OUTSIDE" strokeWidth="0.0" text="####">
            <font>
               <Font size="22.0" />
            </font>
         </Text>
         <Button mnemonicParsing="false" onAction="#forwardOneMonth" text="&gt;" />
      </children>
   </HBox>
   <HBox alignment="CENTER" layoutX="14.0" layoutY="78.0" prefHeight="44.0" prefWidth="716.0" spacing="88.75">
      <children>
         <Text strokeType="OUTSIDE" strokeWidth="0.0" text="Su" textAlignment="CENTER" />
         <Text layoutX="213.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Mo" textAlignment="CENTER" />
         <Text layoutX="222.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Tu" textAlignment="CENTER" />
         <Text layoutX="232.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="We" textAlignment="CENTER" />
         <Text layoutX="241.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Th" textAlignment="CENTER" />
         <Text layoutX="251.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Fr" textAlignment="CENTER" />
         <Text layoutX="266.0" layoutY="37.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Sa" textAlignment="CENTER" />
      </children>
      <padding>
         <Insets right="9.0" />
      </padding>
   </HBox>

</AnchorPane>

CalendarActivity.java

import java.time.ZonedDateTime;

public class CalendarActivity {
    private ZonedDateTime date;
    private String clientName;
    private Integer serviceNo;

    public CalendarActivity(ZonedDateTime date, String clientName, Integer serviceNo) {
        this.date = date;
        this.clientName = clientName;
        this.serviceNo = serviceNo;
    }

    public ZonedDateTime getDate() {
        return date;
    }

    public void setDate(ZonedDateTime date) {
        this.date = date;
    }

    public String getClientName() {
        return clientName;
    }

    public void setClientName(String clientName) {
        this.clientName = clientName;
    }

    public Integer getServiceNo() {
        return serviceNo;
    }

    public void setServiceNo(Integer serviceNo) {
        this.serviceNo = serviceNo;
    }

    @Override
    public String toString() {
        return "CalenderActivity{" +
                "date=" + date +
                ", clientName='" + clientName + '\'' +
                ", serviceNo=" + serviceNo +
                '}';
    }
}

CalendarController.java

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;
import javafx.stage.Stage;

import java.io.IOException;
import java.net.URL;
import java.time.ZonedDateTime;
import java.util.*;

public class CalendarController implements Initializable {

    ZonedDateTime dateFocus;
    ZonedDateTime today;

    @FXML
    private Text year;

    @FXML
    private Text month;

    @FXML
    private FlowPane calendar;

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
        dateFocus = ZonedDateTime.now();
        today = ZonedDateTime.now();
        drawCalendar();
    }

    @FXML
    void backOneMonth(ActionEvent event) {
        dateFocus = dateFocus.minusMonths(1);
        calendar.getChildren().clear();
        drawCalendar();
    }

    @FXML
    void forwardOneMonth(ActionEvent event) {
        dateFocus = dateFocus.plusMonths(1);
        calendar.getChildren().clear();
        drawCalendar();
    }

    private void drawCalendar(){
        year.setText(String.valueOf(dateFocus.getYear()));
        month.setText(String.valueOf(dateFocus.getMonth()));

        double calendarWidth = calendar.getPrefWidth();
        double calendarHeight = calendar.getPrefHeight();
        double strokeWidth = 1;
        double spacingH = calendar.getHgap();
        double spacingV = calendar.getVgap();

        //List of activities for a given month
        Map<Integer, List<CalendarActivity>> calendarActivityMap = getCalendarActivitiesMonth(dateFocus);

        int monthMaxDate = dateFocus.getMonth().maxLength();
        //Check for leap year
        if(dateFocus.getYear() % 4 != 0 && monthMaxDate == 29){
            monthMaxDate = 28;
        }
        int dateOffset = ZonedDateTime.of(dateFocus.getYear(), dateFocus.getMonthValue(), 1,0,0,0,0,dateFocus.getZone()).getDayOfWeek().getValue();

        for (int i = 0; i < 6; i++) {
            for (int j = 0; j < 7; j++) {
                StackPane stackPane = new StackPane();

                Rectangle rectangle = new Rectangle();
                rectangle.setFill(Color.TRANSPARENT);
                rectangle.setStroke(Color.BLACK);
                rectangle.setStrokeWidth(strokeWidth);
                double rectangleWidth =(calendarWidth/7) - strokeWidth - spacingH;
                rectangle.setWidth(rectangleWidth);
                double rectangleHeight = (calendarHeight/6) - strokeWidth - spacingV;
                rectangle.setHeight(rectangleHeight);
                stackPane.getChildren().add(rectangle);

                int calculatedDate = (j+1)+(7*i);
                if(calculatedDate > dateOffset){
                    int currentDate = calculatedDate - dateOffset;
                    if(currentDate <= monthMaxDate){
                        Text date = new Text(String.valueOf(currentDate));
                        double textTranslationY = - (rectangleHeight / 2) * 0.75;
                        date.setTranslateY(textTranslationY);
                        stackPane.getChildren().add(date);

                        List<CalendarActivity> calendarActivities = calendarActivityMap.get(currentDate);
                        if(calendarActivities != null){
                            createCalendarActivity(calendarActivities, rectangleHeight, rectangleWidth, stackPane);
                        }
                    }
                    if(today.getYear() == dateFocus.getYear() && today.getMonth() == dateFocus.getMonth() && today.getDayOfMonth() == currentDate){
                        rectangle.setStroke(Color.BLUE);
                    }
                }
                calendar.getChildren().add(stackPane);
            }
        }
    }

    private void createCalendarActivity(List<CalendarActivity> calendarActivities, double rectangleHeight, double rectangleWidth, StackPane stackPane) {
        VBox calendarActivityBox = new VBox();
        for (int k = 0; k < calendarActivities.size(); k++) {
            if(k >= 2) {
                Text moreActivities = new Text("...");
                calendarActivityBox.getChildren().add(moreActivities);
                moreActivities.setOnMouseClicked(mouseEvent -> {
                    //On ... click print all activities for given date
                    System.out.println(calendarActivities);
                });
                break;
            }
            Text text = new Text(calendarActivities.get(k).getClientName() + ", " + calendarActivities.get(k).getDate().toLocalTime());
            calendarActivityBox.getChildren().add(text);
            text.setOnMouseClicked(mouseEvent -> {
                //On Text clicked
                System.out.println(text.getText());
            });
        }
        calendarActivityBox.setTranslateY((rectangleHeight / 2) * 0.20);
        calendarActivityBox.setMaxWidth(rectangleWidth * 0.8);
        calendarActivityBox.setMaxHeight(rectangleHeight * 0.65);
        calendarActivityBox.setStyle("-fx-background-color:GRAY");
        stackPane.getChildren().add(calendarActivityBox);
    }

    private Map<Integer, List<CalendarActivity>> createCalendarMap(List<CalendarActivity> calendarActivities) {
        Map<Integer, List<CalendarActivity>> calendarActivityMap = new HashMap<>();

        for (CalendarActivity activity: calendarActivities) {
            int activityDate = activity.getDate().getDayOfMonth();
            if(!calendarActivityMap.containsKey(activityDate)){
                calendarActivityMap.put(activityDate, List.of(activity));
            } else {
                List<CalendarActivity> OldListByDate = calendarActivityMap.get(activityDate);

                List<CalendarActivity> newList = new ArrayList<>(OldListByDate);
                newList.add(activity);
                calendarActivityMap.put(activityDate, newList);
            }
        }
        return  calendarActivityMap;
    }

    private Map<Integer, List<CalendarActivity>> getCalendarActivitiesMonth(ZonedDateTime dateFocus) {
        List<CalendarActivity> calendarActivities = new ArrayList<>();
        int year = dateFocus.getYear();
        int month = dateFocus.getMonth().getValue();

        Random random = new Random();
        for (int i = 0; i < 50; i++) {
            ZonedDateTime time = ZonedDateTime.of(year, month, random.nextInt(27)+1, 16,0,0,0,dateFocus.getZone());
            calendarActivities.add(new CalendarActivity(time, "Hans", 111111));
        }

        return createCalendarMap(calendarActivities);
    }
}

Main.java

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.stage.Stage;

import java.io.IOException;

public class Main extends Application {
    @Override
    public void start(Stage stage) throws IOException {
        FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("calendar.fxml"));
        Scene scene = new Scene(fxmlLoader.load());
        stage.setTitle("Hello!");
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch();
    }
}

Ayo thanks ima use for skool project

Thanks Man! By the way.... I really like motorboats

Man I coudn't make it work somebody told me that main method is missing but I can't figure it out what did I do wrong. Or missing