Using JFreeChart to display recent changes in a time series

Question

How can I use JFreeChart to display just the most recent data in a continually updated time series?

Addenda: A complete, working example that incorporates the accept

Answer 1

One alternative approach to @thrashgod's answer would be to use TimeSeriesCollection and setting item age on the TimeSeries. Below code can setup a graph to show last 1 hour of data with 1 minute intervals.

private TimeSeriesCollection dataset;
private TimeSeries sensorSeries;
sensorSeries = new TimeSeries("name", Minute.class);
sensorSeries.setMaximumItemAge(60);
dataset = new TimeSeriesCollection();
dataset.addSeries(sensorSeries);

..and you will add the data as it comes with:

sensorSeries.add(new Minute(new Date()), newData);