package helloworld;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;


public class HelloWorld extends Application {

    private int helloCounter = 0;

    @Override
    public void start(Stage primaryStage) {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        final TextArea textArea = new TextArea();

        btn.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                textArea.setText(textArea.getText()+"Hello World! ("+helloCounter+")\n");
                helloCounter++;
            }
        });

        VBox root = new VBox(10);
        root.setPadding(new Insets(10));
        root.getChildren().add(btn);

        root.getChildren().add(textArea);

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

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

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}