barchart.css

.default-color8.chart-bar { -fx-bar-fill: #babdb6; }
.default-color9.chart-bar { -fx-bar-fill: #4e9a06; }

BarChartSample.java

/**
 * Copyright (c) 2008, 2012 Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 */
import com.javafx.experiments.scenicview.ScenicView;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Node;
import javafx.scene.chart.BarChart;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;

/**
 * A chart that displays rectangular bars with heights indicating data values
 * for categories. Used for displaying information when at least one axis has
 * discontinuous or discrete data.
 *
 * @see javafx.scene.chart.BarChart
 * @see javafx.scene.chart.Chart
 * @see javafx.scene.chart.Axis
 * @see javafx.scene.chart.CategoryAxis
 * @see javafx.scene.chart.NumberAxis
 *
 */
public class BarChartSample extends Application {
    private static final int AVAILABLE_COLORS = 10;
    private static final int CASPIAN_COLOR_COUNTS = 8;

    private void init(Stage primaryStage) {
        BorderPane root = new BorderPane();
        primaryStage.setScene(new Scene(root));
        String[] years = {"2010","2011", "2012"};
        CategoryAxis xAxis = new CategoryAxis();
        xAxis.setCategories(FXCollections.<String>observableArrayList(years));
        NumberAxis yAxis = new NumberAxis("Units Sold", 0.0d, 3000.0d, 1000.0d);
        ObservableList<BarChart.Series> barChartData = FXCollections.observableArrayList(
            new BarChart.Series("Watermelons", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 1292d),
               new BarChart.Data(years[1], 567d),
               new BarChart.Data(years[2], 1000)
            )),
            new BarChart.Series("Pineapples", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 298),
               new BarChart.Data(years[1], 100),
               new BarChart.Data(years[2], 1270)
            )),
            new BarChart.Series("Coconuts", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 2156),
               new BarChart.Data(years[1], 2000),
               new BarChart.Data(years[2], 600)
            )),
            new BarChart.Series("Kiwis", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 1908),
               new BarChart.Data(years[1], 1750),
               new BarChart.Data(years[2], 2800)
            )),
            new BarChart.Series("Bananas", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 1356),
               new BarChart.Data(years[1], 800),
               new BarChart.Data(years[2], 2507)
            )),
            new BarChart.Series("Blueberries", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 987),
               new BarChart.Data(years[1], 300),
               new BarChart.Data(years[2], 1987)
            )),
            new BarChart.Series("Kurmas", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 1500),
               new BarChart.Data(years[1], 567d),
               new BarChart.Data(years[2], 437)
            )),
            new BarChart.Series("Mangos", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 1292d),
               new BarChart.Data(years[1], 500),
               new BarChart.Data(years[2], 609)
            )),
            new BarChart.Series("Apples", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 2587),
               new BarChart.Data(years[1], 567d),
               new BarChart.Data(years[2], 1398)
            )),
            new BarChart.Series("Lemons", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 2559),
               new BarChart.Data(years[1], 956),
               new BarChart.Data(years[2], 1984)
            )),
            new BarChart.Series("Oranges", FXCollections.observableArrayList(
               new BarChart.Data(years[0], 2774),
               new BarChart.Data(years[1], 1154),
               new BarChart.Data(years[2], 1927)
            ))
        );
        BarChart chart = new BarChart(xAxis, yAxis, barChartData, 25.0d);
        
        /**
         * Set Series color
         */
        for (int i = 0; i < barChartData.size(); i++) {
            for (Node node : chart.lookupAll(".series" + i)) {
                node.getStyleClass().remove("default-color" + (i % CASPIAN_COLOR_COUNTS));
                node.getStyleClass().add("default-color" + (i % AVAILABLE_COLORS));
            }
        }

        /**
         * Set Legend items color
         */
        int i = 0;
        for (Node node : chart.lookupAll(".chart-legend-item")) {
            if (node instanceof Label && ((Label) node).getGraphic() != null) {
                ((Label) node).getGraphic().getStyleClass().remove("default-color" + (i % CASPIAN_COLOR_COUNTS));
                ((Label) node).getGraphic().getStyleClass().add("default-color" + (i % AVAILABLE_COLORS));
            }
            i++;
        }
        
        root.setCenter(chart);
    }

    @Override public void start(Stage primaryStage) throws Exception {
        init(primaryStage);
        primaryStage.setTitle("10 Bar Colors");
        primaryStage.getScene().getStylesheets().add("barchart.css");
        primaryStage.show();
        ScenicView.show(primaryStage.getScene());
    }
    public static void main(String[] args) { launch(args); }
}