JAVAFX LineChart Thread [duplicate] - multithreading

Question

This question already has an answer here:
App hangs up or "Not on FX application thread" occurs during app activity
(1 answer)
Closed 7 years ago.
Help me to realize the Line Chart and how to do better.
I need to add a Line Chart 2-3 The schedule of 30 - the values reach from the database. I wanted to make a separate stream, but there are errors.
ERROR : 'Exception in thread "Thread-4"
java.lang.IllegalStateException: Not on FX application thread;
currentThread = Thread-4''
import extfx.scene.chart.DateAxis;
import javafx.application.Application;
import javafx.concurrent.Task;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import java.util.Date;
import java.util.GregorianCalendar;
public class main extends Application{
public static void main(String[] args) {
launch(args);
}
public static LineChart<Date, Number> lineChart;
public static Thread threadInTrendFlow;
#Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setTitle("-----------------------");
NumberAxis numberAxis = new NumberAxis();
DateAxis dateAxis = new DateAxis();
lineChart = new LineChart<Date, Number>(dateAxis,numberAxis);
lineChart.getData().add(scFlow.series);
BorderPane pane = new BorderPane();
pane.setCenter(lineChart);
///
Button inLineChart = new Button("insert");
inLineChart.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
Task<Void> loaded = new scFlow();
threadInTrendFlow = new Thread(loaded);
threadInTrendFlow.start();
}
});
pane.setTop(inLineChart);
Scene scene = new Scene(pane,800,600);
primaryStage.setScene(scene);
primaryStage.show();
}
}

Answer 1

Use Platform.runlater(()->{}) when invoking stuff that goes on the application thread.
There are plenty of threads related to somewhat similar problems. Just search multithreading javafx.