import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.chart.PieChart;
import javafx.stage.Stage;


public class PieChartApp extends Application {

    private PieChart chart;

    public static ObservableList<PieChart.Data> generateData() {
        return FXCollections.observableArrayList(
                new PieChart.Data("AAAAA", 20),
                new PieChart.Data("BBBBB", 12),
                new PieChart.Data("CCCCC", 10000),
                new PieChart.Data("DDDDD", 22),
                new PieChart.Data("EEEEE", 30));
    }

    public Parent createContent() {
        chart = new PieChart(generateData());
        chart.setClockwise(false);
        return chart;
    }

    @Override public void start(Stage primaryStage) throws Exception {
        primaryStage.setScene(new Scene(createContent()));
        primaryStage.show();
    }

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