Creating pie charts

The following pie chart example is based on the 2000 population of selected European countries as summarized here:

Country	Population	Percentage
Belgium	10,263,618	3
France	61,137,000	26
Germany	82,187,909	35
Netherlands	15,907,853	7
Sweden	8,872,000	4
United Kingdom	59,522,468	25

 

The JavaFX implementation uses the same Application base class and main method as used in the previous examples. We will not use a separate method for creating the GUI, but instead place this code in the start method, as shown here:

public class PieChartSample extends Application { 

    public void start(Stage stage) { 
        Scene scene = new Scene(new Group()); 
        stage.setTitle("Europian Country Population"); 
        stage.setWidth(500); 
        stage.setHeight(500); 
        ... 
    } 

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

} 

A pie chart is represented by the PieChart class. We can create and initialize the pie chart in the constructor by using an ObservableList...