77. MediaPlayer

With MediaPlayer, we may stream an audio source.

Since the entire sound is not stored in memory, the MediaPlayer is necessary for large audio files.

---

package ex77;

import java.net.URL;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.property.SimpleStringProperty;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.stage.Stage;

public class Ex77 extends Application {

    private final String style =
            "-fx-font-family: Georgia; -fx-font-size: 32;"
            +"-fx-text-fill: purple;";

    @Override
    public void start(Stage stage) {

        URL chirpURL = getClass().getResource("/chirp.wav");
        
        Media media = new Media(chirpURL.toString());
        MediaPlayer mediaPlayer = new MediaPlayer(media);
        mediaPlayer.setCycleCount(5);
        
        Button button = new Button("Play");
        button.setStyle(style);
        button.setOnAction(e-> {
            if (button.getText().equals("Play")) {
                mediaPlayer.play();
                button.setText("Exit");
            }
            else Platform.exit();
            
        });
        
        Label label = new Label();
        label.setStyle(style);
        
        label.textProperty().bind(
                new SimpleStringProperty("Current Count: ").
                concat(
                mediaPlayer.currentCountProperty().asString()));
        
        VBox vbox = new VBox(50, button, label);
        vbox.setAlignment(Pos.CENTER);
        vbox.setStyle("-fx-background-color: lime");

        Scene scene = new Scene(vbox, 400, 300);
        stage.setTitle("Example 77. MediaPlayer");

        stage.setScene(scene);
        stage.show();
    }
    
    public static void main(String[] args) {
        launch();
    }
}

---

This is the output after 2 counts of playing sound. Note the button text has changed form Play to Exit.

---