import javafx.application.Application;
import javafx.stage.Stage;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Circle;


public class MoveCircle extends Application{
	protected Circle circle = new Circle(250, 250, 40);


	protected BorderPane getPane(){
		HBox paneForButtons = new HBox(20);
		Button btLeft = new Button ("left");
		Button btRight = new Button("Right");
		Button btUp = new Button("Up");
		Button btDown = new Button("Down");
		paneForButtons.getChildren().addAll(btLeft, btRight, btUp, btDown);
		paneForButtons.setAlignment(Pos.CENTER);
		paneForButtons.setStyle("-fx-border-color: green");

		 BorderPane pane = new BorderPane();
		 pane.setBottom(paneForButtons);

		 Pane paneForCircle = new Pane();
		 paneForCircle.getChildren().add(circle);
		 pane.setCenter(paneForCircle);

		 btLeft.setOnAction(e -> circle.setCenterX(circle.getCenterX() - 10));
		 btRight.setOnAction(e -> circle.setCenterX(circle.getCenterX() + 10));
		 btUp.setOnAction(e -> circle.setCenterY(circle.getCenterY() - 10));
		 btDown.setOnAction(e -> circle.setCenterY(circle.getCenterY() + 10));


		 return pane;

	}

	@Override
	public void start(Stage primaryStage){

		 Scene scene = new Scene(getPane(), 500, 500);
		 primaryStage.setTitle("ButtonDemo");
		 primaryStage.setScene(scene);
		 primaryStage.show();
	}
	 public static void main(String[] args){
         launch(args);

	 }
}