JavaFX Sequential Timeline Example

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.SequentialTransition;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class SequentialTimelineEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        Pane root = new Pane();

        Circle c = new Circle(50, 100, 10);
        c.setFill(Color.CADETBLUE);

        KeyValue kv1 = new KeyValue(c.scaleXProperty(), 4);
        KeyValue kv2 = new KeyValue(c.scaleYProperty(), 4);
        KeyFrame kf1 = new KeyFrame(Duration.millis(3000), kv1, kv2);
       
        Timeline scale = new Timeline();
        scale.getKeyFrames().add(kf1);       

        KeyValue kv3 = new KeyValue(c.centerXProperty(), 250);
        KeyFrame kf2 = new KeyFrame(Duration.millis(5000), kv3);
       
        Timeline move = new Timeline();
        move.getKeyFrames().add(kf2);       
       
        KeyValue kv4 = new KeyValue(c.scaleXProperty(), 1);
        KeyValue kv5 = new KeyValue(c.scaleYProperty(), 1);
        KeyFrame kf3 = new KeyFrame(Duration.millis(3000), kv4, kv5);
       
        Timeline scale2 = new Timeline();
        scale2.getKeyFrames().add(kf3);          

        SequentialTransition seqtr = new SequentialTransition(scale,
                move, scale2);
        seqtr.play();
       
        root.getChildren().add(c);

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

        stage.setTitle("Sequential Timeline animation");
        stage.setScene(scene);
        stage.show();
    }

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

JavaFX Timeline Example

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.effect.Lighting;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class TimelineEx extends Application {


    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        Pane root = new Pane();

        Rectangle rect = new Rectangle(20, 20, 60, 60);
        rect.setEffect(new Lighting());
        rect.setFill(Color.CADETBLUE);

        Timeline tl = new Timeline();

        tl.setCycleCount(2);
        tl.setAutoReverse(true);
       
        KeyValue kv = new KeyValue(rect.translateXProperty(), 200);
        KeyFrame kf = new KeyFrame(Duration.millis(2000), kv);
        tl.getKeyFrames().addAll(kf);

        tl.play();

        root.getChildren().addAll(rect);

        Scene scene = new Scene(root, 350, 250);

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

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

JavaFX Parallel Transition Example

import javafx.animation.FillTransition;
import javafx.animation.ParallelTransition;
import javafx.animation.RotateTransition;
import javafx.animation.ScaleTransition;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

public class ParallelTransitionEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        Pane root = new Pane();

        Rectangle rect = new Rectangle(50, 50, 30, 30);
        rect.setArcHeight(10);
        rect.setArcWidth(10);
        rect.setFill(Color.CADETBLUE);

        RotateTransition rottr
                = new RotateTransition(Duration.millis(2000), rect);
        rottr.setByAngle(180);
        rottr.setCycleCount(2);
        rottr.setAutoReverse(true);
       
        ScaleTransition sctr = new ScaleTransition(Duration.millis(2000),
                rect);
        sctr.setByX(2);
        sctr.setByY(2);
        sctr.setCycleCount(2);
        sctr.setAutoReverse(true);
       
        FillTransition fltr = new FillTransition(Duration.millis(2000),
                rect, Color.CADETBLUE, Color.STEELBLUE);
        fltr.setCycleCount(2);
        fltr.setAutoReverse(true);

        root.getChildren().add(rect);
       
        ParallelTransition ptr = new ParallelTransition();
        ptr.getChildren().addAll(rottr, sctr, fltr);
       
        ptr.play();   

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

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

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

JavaFX Path Transition Example

import javafx.animation.PathTransition;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.CubicCurveTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.stage.Stage;
import javafx.util.Duration;

public class PathTransitionEx extends Application {

       public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        Pane root = new Pane();

        Path path = new Path();
        path.getElements().add(new MoveTo(20, 120));
        path.getElements().add(new CubicCurveTo(180, 60, 250, 340, 420, 240));

        Circle circle = new Circle(20, 120, 10);
        circle.setFill(Color.CADETBLUE);
       
        PathTransition ptr = new PathTransition();

        ptr.setDuration(Duration.seconds(6));
        ptr.setDelay(Duration.seconds(2));
        ptr.setPath(path);
        ptr.setNode(circle);
        ptr.setCycleCount(2);
        ptr.setAutoReverse(true);
        ptr.play();    

        root.getChildren().addAll(path, circle);

        Scene scene = new Scene(root, 450, 300);

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

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

JavaFX Animation

import javafx.animation.AnimationTimer;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.scene.text.Font;
import javafx.stage.Stage;

public class AnimationTimerEx extends Application {

    private double opacity = 1;
    private Label lbl;

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();

        lbl = new Label("Sateesh B");
        lbl.setFont(Font.font(48));
        root.getChildren().add(lbl);

        AnimationTimer timer = new MyTimer();
        timer.start();

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

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

    private class MyTimer extends AnimationTimer {

                public void handle(long now) {
       
            doHandle();
        }

        private void doHandle() {

            opacity -= 0.01;
            lbl.opacityProperty().set(opacity);

            if (opacity <= 0) {
                stop();
                System.out.println("Animation stopped");
            }
        }
    }

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

JavaFX Sepia Tone Example

import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.scene.CacheHint;
import javafx.scene.Scene;
import javafx.scene.effect.ColorAdjust;
import javafx.scene.effect.Effect;
import javafx.scene.effect.SepiaTone;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class SepiaToneEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();
       
        Image image = new Image("file:android.png");

        ImageView iw = new ImageView(image);

        SepiaTone sepia = new SepiaTone();
        iw.effectProperty().bind(
                Bindings
                    .when(iw.hoverProperty())
                        .then((Effect) sepia)
                        .otherwise((Effect) null)
        );

        iw.setCache(true);
        iw.setCacheHint(CacheHint.SPEED); 
       
        root.getChildren().add(iw);

        Scene scene = new Scene(root);

        stage.setTitle("SepiaTone");
        scene.setFill(Color.WHITESMOKE);
        stage.setScene(scene);
        stage.show();
    }

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

JavaFX Gaussian Blur Example

import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Slider;
import javafx.scene.effect.GaussianBlur;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class GaussianBlurEx extends Application {
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        VBox root = new VBox(30);
        root.setPadding(new Insets(10));
       
        DoubleProperty radius = new SimpleDoubleProperty(0);
       
        Text blurredText = new Text("Sateesh");
        blurredText.setFont(Font.font(38));       
       
        Slider slider = new Slider(1, 20, 1);
        radius.bind(slider.valueProperty());       
       
        slider.valueProperty().addListener(event -> {
            blurredText.setEffect(new GaussianBlur(radius.get()));
        });

        root.getChildren().addAll(slider, blurredText);
       
        Scene scene = new Scene(root, 300, 250, Color.WHITESMOKE);

        stage.setTitle("Blur effect");
        stage.setScene(scene);
        stage.show();
    }

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

JavaFX Lighting Example

import javafx.application.Application;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Slider;
import javafx.scene.effect.Light;
import javafx.scene.effect.Lighting;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class LightingEx extends Application {
    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {
       
        VBox root = new VBox(30);
        root.setPadding(new Insets(10));
       
        DoubleProperty azimuth = new SimpleDoubleProperty(0);       

        Light.Distant light = new Light.Distant();
        light.setAzimuth(0);

        Lighting lighting = new Lighting(light);
        lighting.setSurfaceScale(5.0);

        Text text = new Text();
        text.setText("Sateesh");
        text.setFill(Color.STEELBLUE);
        text.setFont(Font.font(null, FontWeight.BOLD, 60));
       
        Slider slider = new Slider(1, 360, 0);
        azimuth.bind(slider.valueProperty());       
       
        slider.valueProperty().addListener(event -> {
            light.setAzimuth(azimuth.get());
            lighting.setLight(light);
            text.setEffect(lighting);
        });       

        text.setEffect(lighting);
       
        root.getChildren().addAll(slider, text);

        Scene scene = new Scene(root, 300, 250, Color.WHITESMOKE);

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

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

JavaFx Reflection Effect Example

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.effect.Reflection;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class ReflectionEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();
       
        Text text = new Text();
        text.setText("SATEESH");
        text.setFill(Color.STEELBLUE);
        text.setFont(Font.font("Serif", FontWeight.BOLD, 60));

        Reflection ref = new Reflection();
        text.setEffect(ref);
       
        root.getChildren().add(text);       

        Scene scene = new Scene(root, 300, 250, Color.WHITESMOKE);

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

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

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);
    }
}

JavaFX TabPane Example

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class TabPaneEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        StackPane root = new StackPane();

        TabPane tabPane = new TabPane();
       
        Tab tab1 = new Tab();
        tab1.setText("Rectangle");
        tab1.setContent(new Rectangle(100, 100, Color.LIGHTSTEELBLUE));
       
        Tab tab2 = new Tab();
        tab2.setText("Line");
        tab2.setContent(new Line(0, 0, 100, 100));
       
        Tab tab3 = new Tab();
        tab3.setText("Circle");
        tab3.setContent(new Circle(0, 0, 50, Color.LIGHTGREEN));        
       
        tabPane.getSelectionModel().select(1);
        tabPane.getTabs().addAll(tab1, tab2, tab3);
       
        root.getChildren().add(tabPane);

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

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

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

JavaFX RadioButton 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.control.RadioButton;
import javafx.scene.control.Toggle;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;


public class RadioButtonEx extends Application {
   
    private final double BORDER = 10d;
    private Label lbl2;

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        AnchorPane root = new AnchorPane();
       
        VBox vbox = new VBox(10);
        vbox.setPadding(new Insets(10));
       
        Label lbl1 = new Label("Fruits");
       
        lbl2 = new Label("");
        lbl2.setStyle("-fx-background-color:wheat; -fx-padding: 0 0 0 5");
        lbl2.prefWidthProperty().bind(stage.widthProperty().subtract(2*BORDER));

        ToggleGroup tg =  new ToggleGroup();
        tg.selectedToggleProperty().addListener(new MyToggleListener());

        RadioButton rb1 = new RadioButton("Apple");
        rb1.setToggleGroup(tg);
        rb1.setSelected(true);

        RadioButton rb2 = new RadioButton("Orange");
        rb2.setToggleGroup(tg);

        RadioButton rb3 = new RadioButton("Mango");
        rb3.setToggleGroup(tg);
       
        vbox.getChildren().addAll(lbl1, rb1, rb2, rb3);
       
        root.getChildren().addAll(vbox, lbl2);
       
        AnchorPane.setTopAnchor(vbox, BORDER);
        AnchorPane.setBottomAnchor(lbl2, BORDER);
        AnchorPane.setLeftAnchor(lbl2, BORDER);

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

        stage.setTitle("RadioButton");
        stage.setScene(scene);
        stage.show();
    }
   
    private class MyToggleListener implements ChangeListener<Toggle> {

        public void changed(ObservableValue<? extends Toggle> observable,
                Toggle oldValue, Toggle newValue) {
           
            RadioButton rb = (RadioButton) newValue;
            String txt = rb.getText();
            lbl2.setText(txt);
        }
    }

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

JavaFX Color Picker

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.ColorPicker;
import javafx.scene.layout.HBox;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;


public class ColorPickerEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        HBox root = new HBox(25);
        root.setAlignment(Pos.BASELINE_CENTER);
        root.setPadding(new Insets(10));

        Text txt = new Text("SATEESH");

        Font font = Font.font(20);
        txt.setFont(font);

        ColorPicker cp = new ColorPicker();
        cp.setOnAction((ActionEvent event) -> {
            txt.setFill(cp.getValue());
        });

        root.getChildren().addAll(cp, txt);

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

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

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

JavaFX Menu 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.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;


public class MenuBarEx extends Application {


    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {

        HBox root = new HBox();

        MenuBar mbar = new MenuBar();
        mbar.prefWidthProperty().bind(stage.widthProperty());

        MyMenuHandler handler = new MyMenuHandler();

        Menu fileMenu = new Menu("File");
        mbar.getMenus().add(fileMenu);

        MenuItem nmi = new MenuItem("New");
        nmi.setOnAction(handler);
        fileMenu.getItems().add(nmi);

        MenuItem omi = new MenuItem("Open");
        omi.setOnAction(handler);
        fileMenu.getItems().add(omi);

        MenuItem smi = new MenuItem("Save");
        smi.setOnAction(handler);
        fileMenu.getItems().add(smi);

        fileMenu.getItems().add(new SeparatorMenuItem());

        MenuItem emi = new MenuItem("Exit");
        emi.setOnAction((ActionEvent event) -> {
            Platform.exit();
        });

        fileMenu.getItems().add(emi);

        root.getChildren().add(mbar);

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

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

    private class MyMenuHandler implements EventHandler<ActionEvent> {

        public void handle(ActionEvent event) {
           
            doShowMessageDialog(event);
        }
       
        private void doShowMessageDialog(ActionEvent event) {

            MenuItem mi = (MenuItem) event.getSource();
            String item = mi.getText();
            Alert alert = new Alert(AlertType.INFORMATION);
            alert.setTitle("Information dialog");
            alert.setHeaderText("Menu item selection information");
            alert.setContentText(item + " menu item selected");

            alert.showAndWait();
        }
    }

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

JavaFX Calendar Example

import java.time.LocalDate;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.DatePicker;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class DatePickerEx extends Application {

    public void start(Stage stage) {

        initUI(stage);
    }

    private void initUI(Stage stage) {
       
        VBox root = new VBox(15);
        root.setPadding(new Insets(10));      
       
        Label lbl = new Label("...");
       
        DatePicker datePicker = new DatePicker();

        datePicker.setOnAction(e -> {
            LocalDate date = datePicker.getValue();
            lbl.setText(date.toString());
        });

        root.getChildren().addAll(datePicker, lbl);

        Scene scene = new Scene(root, 350, 200);
       
        stage.setTitle("Date picker");
        stage.setScene(scene);
        stage.show();      
    }

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

Java Program to Solve Tower of Hanoi Problem using Stacks

     import java.util.*;

    

     /* Class TowerOfHanoiUsingStacks */

     public class TowerOfHanoiUsingStacks

     {

         public static int N;

         /* Creating Stack array  */

         public static Stack<Integer>[] tower = new Stack[4];

    

         public static void main(String[] args)

         {

             Scanner scan = new Scanner(System.in);

             tower[1] = new Stack<Integer>();

             tower[2] = new Stack<Integer>();

             tower[3] = new Stack<Integer>();

             /* Accepting number of disks */        

             System.out.println("Enter number of disks");

             int num = scan.nextInt();

             N = num;

             toh(num);

         }

         /* Function to push disks into stack */

         public static void toh(int n)

         {

             for (int d = n; d > 0; d--)

                 tower[1].push(d);

             display();

             move(n, 1, 2, 3);        

         }

         /* Recursive Function to move disks */

         public static void move(int n, int a, int b, int c)

         {

             if (n > 0)

             {

                 move(n-1, a, c, b);    

                 int d = tower[a].pop();                                            

                 tower[c].push(d);

                 display();                  

                 move(n-1, b, a, c);    

             }        

         }

         /*  Function to display */

         public static void display()

         {

             System.out.println("  A  |  B  |  C");

             System.out.println("---------------");

             for(int i = N - 1; i >= 0; i--)

             {

                 String d1 = " ", d2 = " ", d3 = " ";

                 try

                 {

                     d1 = String.valueOf(tower[1].get(i));

                 }

                 catch (Exception e){

                 }   

                 try

                 {

                     d2 = String.valueOf(tower[2].get(i));

                 }

                 catch(Exception e){

                 }

                 try

                 {

                     d3 = String.valueOf(tower[3].get(i));

                 }

                 catch (Exception e){

                 }

                 System.out.println("  "+d1+"  |  "+d2+"  |  "+d3);

             }

             System.out.println("\n");        

         }

     }

C program for Tower of Hanoi using Recursion

     #include <stdio.h>

         void towers(int, char, char, char);

    int main()

    {

        int num;

        printf("Enter the number of disks : ");

        scanf("%d", &num);

        printf("The sequence of moves involved in the Tower of Hanoi are :\n");

        towers(num, 'A', 'C', 'B');

        return 0;

    }

    void towers(int num, char frompeg, char topeg, char auxpeg)

    {

        if (num == 1)

        {

            printf("\n Move disk 1 from peg %c to peg %c", frompeg, topeg);

            return;

        }

        towers(num - 1, frompeg, auxpeg, topeg);

        printf("\n Move disk %d from peg %c to peg %c", num, frompeg, topeg);

        towers(num - 1, auxpeg, topeg, frompeg);

    }