GalaxyFX (Template for a simple JavaFX application with a Canvas node)

Main.java

import javafx.application.Application;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.layout.StackPane;
import javafx.scene.Scene;


/**
 * User: hansolo
 * Date: 14.02.20
 * Time: 14:58
 */
public class Main extends Application {
    private Canvas          canvas;
    private GraphicsContext ctx;


    @Override public void init() {
        canvas = new Canvas(500, 800);
        ctx    = canvas.getGraphicsContext2D();
    }

    @Override public void start(Stage stage) {
        StackPane pane = new StackPane(canvas);

        Scene scene = new Scene(pane);

        stage.setTitle("GalaxyFX");
        stage.setScene(scene);
        stage.show();

        draw(ctx);
    }

    @Override public void stop() {
        System.exit(0);
    }

    private void draw(final GraphicsContext ctx) {
        ctx.clearRect(0, 0, canvas.getWidth(), canvas.getHeight());
        ctx.setStroke(Color.RED);
        ctx.strokeLine(10, 10, 200, 200);
    }

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