JavaFX Drop Shadow Example

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.effect.DropShadow;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class DropShadowEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();
       
        Rectangle rect = new Rectangle(0, 0, 100, 100);
        rect.setFill(Color.GREENYELLOW);
       
        DropShadow ds = new DropShadow(15, Color.DARKGREEN);
       
        rect.setEffect(ds);
       
        root.getChildren().add(rect);

        Scene scene = new Scene(root, 250, 200, Color.WHITESMOKE);

        stage.setTitle("DropShadow");
        stage.setScene(scene);
        stage.show();
    }

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

JavaFX Moving Window positio example

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MovingWindowEx extends Application {

    int x = 0;
    int y = 0;
    Label lblx;
    Label lbly;
   
    @Override
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        VBox root = new VBox(10);
        root.setPadding(new Insets(10));
       
        String txt1 = String.format("x: %d", x);
        lblx = new Label(txt1);
       
        String txt2 = String.format("y: %d", y);
        lbly = new Label(txt2);       
       
        root.getChildren().addAll(lblx, lbly);
       
        stage.xProperty().addListener(new ChangeListener<Number>() {

            @Override
            public void changed(ObservableValue<? extends Number> observable,
                    Number oldValue, Number newValue) {
               
                doChange(newValue);
            }
           
            private void doChange(Number newValue) {
               
                x = newValue.intValue();
                updateXLabel();               
            }
           
        });
       
        stage.yProperty().addListener(new ChangeListener<Number>() {

            @Override
            public void changed(ObservableValue<? extends Number> observable,
                    Number oldValue, Number newValue) {
               
                doChange(newValue);
            }
           
            private void doChange(Number newValue) {
               
                y = newValue.intValue();
                updateYLabel();               
            }
           
        });       

        Scene scene = new Scene(root, 300, 250);

        stage.setTitle("Moving window");
        stage.setScene(scene);
        stage.show();
    }
   
    private void updateXLabel() {
       
        String txt = String.format("x: %d", x);
        lblx.setText(txt);
    }
   
    private void updateYLabel() {
       
        String txt = String.format("y: %d", y);
        lbly.setText(txt);       
    }

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

JavaFX Timer Example

import java.util.Timer;
import java.util.TimerTask;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.Spinner;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;


public class TimerEx extends Application {

    int delay = 0;

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        HBox root = new HBox(10);
        root.setPadding(new Insets(10));

        Timer timer = new java.util.Timer();
       
        Spinner spinner = new Spinner(1, 60, 5);
        spinner.setPrefWidth(80);       

        Button btn = new Button("Show message");
        btn.setOnAction(event -> {
           
            delay = (int) spinner.getValue();
            timer.schedule(new MyTimerTask(), delay*1000);
        });

        root.getChildren().addAll(btn, spinner);

        stage.setOnCloseRequest(event -> {
            timer.cancel();
        });
       
        Scene scene = new Scene(root);
       
        stage.setTitle("Timer");
        stage.setScene(scene);
        stage.show();
    }

    private class MyTimerTask extends TimerTask {

        @Override
        public void run() {

            Platform.runLater(() -> {
                Alert alert = new Alert(Alert.AlertType.INFORMATION);
                alert.setTitle("Information dialog");
                alert.setHeaderText("Time elapsed information");
               
                String contxt;
               
                if (delay == 1) {
                    contxt = "1 second has elapsed";
                } else {
                    contxt = String.format("%d seconds have elapsed",
                            delay);
                }
               
                alert.setContentText(contxt);
                alert.showAndWait();
            });
        }
    }

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

JavaFX Multiple Sources Example

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MultipleSourcesEx extends Application {
   
    private Label lbl;

    @Override
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {
       
        AnchorPane root = new AnchorPane();

        VBox vbox = new VBox(5);
       
        Button btn1 = new Button("Close");
        Button btn2 = new Button("Open");
        Button btn3 = new Button("Find");
        Button btn4 = new Button("Save");
       
        MyButtonHandler mbh = new MyButtonHandler();
       
        btn1.setOnAction(mbh);
        btn2.setOnAction(mbh);
        btn3.setOnAction(mbh);
        btn4.setOnAction(mbh);
       
        vbox.getChildren().addAll(btn1, btn2, btn3, btn4);
       
        lbl = new Label("Ready");
       
        AnchorPane.setTopAnchor(vbox, 10d);
        AnchorPane.setLeftAnchor(vbox, 10d);
        AnchorPane.setBottomAnchor(lbl, 10d);
        AnchorPane.setLeftAnchor(lbl, 10d);

        root.getChildren().addAll(vbox, lbl);
       
        Scene scene = new Scene(root, 350, 200);

        stage.setTitle("Multiple sources");
        stage.setScene(scene);
        stage.show();
    }
   
    private class MyButtonHandler implements EventHandler<ActionEvent> {

        @Override
        public void handle(ActionEvent event) {
           
            Button btn = (Button) event.getSource();
            lbl.setText(String.format("Button %s fired", btn.getText()));
        }
    }

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

JavaFX Generic Handler Example

import javafx.application.Application;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.event.EventType;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class GenericHandlerEx extends Application {

    @Override
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();
       
        Button btn = new Button("Button");
        btn.addEventHandler(EventType.ROOT, new GenericHandler());
       
        root.getChildren().add(btn);

        Scene scene = new Scene(root, 300, 250);

        stage.setTitle("Generic handler");
        stage.setScene(scene);
        stage.show();
    }

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

    private class GenericHandler implements EventHandler<Event> {

        @Override
        public void handle(Event event) {
            System.out.println(event.getEventType());
        }
    }
}

JavaFX Event Source Example

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class EventSourceEx extends Application {

      public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        Pane root = new Pane();
       
        Rectangle rect = new Rectangle(30, 30, 80, 80);
        rect.setOnMouseClicked(new EventHandler<MouseEvent>() {

            public void handle(MouseEvent e) {
               
                System.out.println(e.getSource());
                System.out.println(e.getTarget());
                System.out.println(e.getEventType());
                System.out.format("x:%f, y:%f%n", e.getSceneX(), e.getSceneY());
                System.out.format("x:%f, y:%f%n", e.getScreenX(), e.getScreenY());
            }
        });
       
        root.getChildren().addAll(rect);

        Scene scene = new Scene(root, 300, 250);
       
        stage.setTitle("Event properties");
        stage.setScene(scene);
        stage.show();
    }

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

JavaFX Event Handler Example

import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.MenuItem;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class EventHandlerEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        HBox root = new HBox();

        ContextMenu conMenu = new ContextMenu();
        MenuItem noopMi = new MenuItem("No op");
        MenuItem exitMi = new MenuItem("Exit");
        conMenu.getItems().addAll(noopMi, exitMi);
      
        exitMi.setOnAction(new EventHandler<ActionEvent>() {
      
            public void handle(ActionEvent event) {
                Platform.exit();
            }
        });
      
        root.setOnMousePressed(new EventHandler<MouseEvent>() {
 
            public void handle(MouseEvent event) {
                if (event.isSecondaryButtonDown()) {
                    conMenu.show(root, event.getScreenX(),
                            event.getScreenY());
                }
            }
        });      

        Scene scene = new Scene(root, 300, 250);

        stage.setTitle("EventHandler");
        stage.setScene(scene);
        stage.show();
    }

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