how to change pie chart colors of JFreeChart?

Question

how to customize the colors of JFreeChart graphic. lets see my java code :

private StreamedContent chartImage ;

public void init(){
    JFreeChart jfreech         


        

Answer 1

To set the colous for a chart you can implement the DrawingSupplier inferface in this case I've used DefaultDrawingSupplier:

public class ChartDrawingSupplier extends DefaultDrawingSupplier  {

    public Paint[] paintSequence;
    public int paintIndex;
    public int fillPaintIndex;

    {
        paintSequence =  new Paint[] {
                new Color(227, 26, 28),
                new Color(000,102, 204),
                new Color(102,051,153),
                new Color(102,51,0),
                new Color(156,136,48),
                new Color(153,204,102),
                new Color(153,51,51),
                new Color(102,51,0),
                new Color(204,153,51),
                new Color(0,51,0),
        };
    }

    @Override
    public Paint getNextPaint() {
        Paint result
        = paintSequence[paintIndex % paintSequence.length];
        paintIndex++;
        return result;
    }


    @Override
    public Paint getNextFillPaint() {
        Paint result
        = paintSequence[fillPaintIndex % paintSequence.length];
        fillPaintIndex++;
        return result;
    }   
}

Then include this code in your `init()' method

JFreeChart jfreechart = ChartFactory.createPieChart("title", createDataset(), true, true, false);
Plot plot = jfreechart.getPlot();
plot.setDrawingSupplier(new ChartDrawingSupplier());
...