import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class BindingsBsp1 extends Application {

	@Override
	public void start(Stage primaryStage) {
		final Konto konto = new Konto();
		konto.setStand(0);
		Button incButt = new Button("+1");
		final Label label = new Label(new Double(konto.getStand()).toString());
		label.setMinSize(incButt.getMinWidth(), incButt.getMinHeight());
		label.setAlignment(Pos.CENTER);
		konto.standProperty().addListener(new ChangeListener<Object>() {
			@Override
			public void changed(ObservableValue<?> o, Object oldVal,
					Object newVal) {
				label.setText(new Double(konto.getStand()).toString());
			}
		});

		incButt.setOnAction(new EventHandler<ActionEvent>() {
			@Override
			public void handle(ActionEvent event) {
				konto.setStand(konto.getStand() + 1);
			}
		});

		GridPane grid = new GridPane();
		grid.setAlignment(Pos.CENTER);
		grid.setVgap(10);
		grid.add(label, 0, 0);
		grid.add(incButt, 0, 1);

		Scene scene = new Scene(grid, 150, 100);
		primaryStage.setScene(scene);
		primaryStage.show();
	}

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