make tooltip in jfreechart data points to appear quicker
===

is there a way to make tooltip in jfreechart data points to appear quicker?  here's how I customize the tooltip:
<pre>

    renderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator(){
        public String generateToolTip(XYDataset dataset, int series, int item) {
           double y =dataset.getYValue(series, item);
           double x = dataset.getXValue(series, item);
           return x+" m, "+y+" %";
        }
    });

</pre>
