Odtnhj

I am begineer in Java FX application. I have created a simple project where i want to run two Java FX instance using Java main application.

public class InfoMain {
public static void main(String args) throws Exception 
 Application.launch(CxiC.class, args);
 Application.launch(BiC.class, args);

BiC class is sample application while I change the text of CxiC class as follow:

public class CxiC extends Application
 @Override
public void start(Stage primaryStage) 
 Button btn = new Button();
 btn.setText("Say 'Hello budapest'");
 btn.setOnAction(new EventHandler<ActionEvent>() 

 @Override
 public void handle(ActionEvent event) 
 System.out.println("Hello budapest!");
 
 );

 StackPane root = new StackPane();
 root.getChildren().add(btn);

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

 primaryStage.setTitle("Hello World!");
 primaryStage.setScene(scene);
 primaryStage.show();

When i execute the application, following screen appear from the message in BiC class. But i am expecting both screen to be appeared on same time. Any suggestion?.

Based on the comments, i modify my code, but stills it shows Hello World message. Even i have deleted both instance from my Java main method class, the message is same. It seems JavaFX argument is not accpeted from the Java Application.
Thanks in advance.

Calling Application.launch() twice should result in an exception.

From Application.launch() API docs:

Launch a standalone application. This method is typically called from the main method(). It must not be called more than once or an exception will be thrown.
The launch method does not return until the application has exited, either via a call to Platform.exit or all of the application windows have been closed.

You need to create an additional Stage and show it.
Here is an example of showing another stage:
How to open two Javafx windows?