Create a Movie Player in javafx using eclipse

Question

I want to create a Movie Player in javafx using eclipse.My code is compile successfully but it gives run time error.I tried using different file path also. But it not resolved the error. My code is

package Player3;

  import javafx.application.Application;
  import javafx.scene.Group;
  import javafx.scene.Scene;
  import javafx.scene.media.Media;
  import javafx.scene.media.MediaPlayer;
  import javafx.scene.media.MediaView;
  import javafx.scene.paint.Color;
  import javafx.stage.Stage;

 public class MediaPlayer3 extends Application{

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

   public void start(Stage stage) throws Exception {
    Group root = new Group();
    Media media =new Media("file:////‪C://Kaise.MP4");
    MediaPlayer player4=new MediaPlayer(media);
    MediaView view = new MediaView(player4);
    root.getChildren().add(view);
     Scene scene =new Scene(root,400,400,Color.BLACK);
     stage.setScene(scene);
     stage.show();
     player4.play();

    }
 }

The error is

        Exception in Application start method
        java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source) 
        java.lang.RuntimeException: Exception in Application start method
         java.lang.RuntimeException: Exception in Application start method

Answer 1

As @Sergei Sirik mentioned this is JavaFX and not 'pure' java. Anyway reading the documentation of Media class for the constructor(String source) you will see :

The source must represent a valid URI and is immutable. Only HTTP, FILE, and JAR URLs are supported. If the provided URL is invalid then an exception will be thrown

So I will suggest first to create a File object ( to be able to check file permissions for read write etc ) and after that just pass the mediaFile.toURI().toString() to the Media class constructor and it will open.

Edit : I guess you will use a FileChooser in future in order to load your video so it will make the file creation and handling much easier.

I had test the code below and it loads successfully my videos on my computer.

import java.io.File;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.scene.paint.Color;
import javafx.stage.FileChooser;
import javafx.stage.Stage;

public class Main extends Application {

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

    public void start(Stage stage) throws Exception {
        Group root = new Group();

        FileChooser fc = new FileChooser();

        File x = fc.showOpenDialog(null);

        Media media = new Media(x.toURI().toString());
        MediaPlayer player4 = new MediaPlayer(media);
        MediaView view = new MediaView(player4);
        root.getChildren().add(view);
        Scene scene = new Scene(root, 400, 400, Color.BLACK);
        stage.setScene(scene);
        stage.show();
        player4.play();

    }
}

If you have any error like : MediaException: MEDIA_UNSUPPORTED : Unrecognized file signature! It's probably cause you alter the file signature by hand or try to play an unsupported file format like mkv.