import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;

import javafx.scene.layout.StackPane;

import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.scene.control.Button;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;

import java.time.LocalTime;


public class Oppgave2 extends Application{

    Text tid = new Text(naa());

    @Override
    public void start(Stage teater) {

        StackPane pane = new StackPane();

        tid.setFont(new Font(80));
        pane.getChildren().add(tid);

        Scene scene = new Scene(pane);
        teater.setScene(scene);
        teater.show();

        Teller teller = new Teller();
        Thread thread = new Thread(teller);
        thread.start();
    }


    private class Teller implements Runnable {

        public void run(){

            while(true){
                try {
                    Thread.sleep(1000);
                }
                catch(InterruptedException e){
                    System.out.println(e);
                }

                tid.setText(naa());
            }
        }
    }

    private static String naa() {
        // Hva er klokken nå? Svaret er på formen "12:34:56".
        LocalTime t = LocalTime.now();
        return String.format("%02d:%02d:%02d",
            t.getHour(), t.getMinute(), t.getSecond());
    }


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