import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;

public class TusenKnapper extends Application {
    @Override
    public void start(Stage stage) {
        GridPane pane = new GridPane();
        fyllGridpaneMed1000Sirkler(pane);
        Scene scene = new Scene(pane, 400, 300);
        stage.setTitle("Velkommen til Java FX");
        stage.setFullScreen(true);
        stage.setScene(scene);
        stage.show();
    }

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

    private static void fyllGridpaneMed1000Sirkler(GridPane pane) {
        for (int kol = 0; kol < 50; kol++) {
            for (int rad = 0; rad < 20; rad++) {
                Button btn = new Button();
                btn.setStyle("-fx-background-color: #000000");
                pane.add(btn, rad, kol);
            }
        }
    }
}