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final DynamicTimeSeriesCollection dataset = new DynamicTimeSeriesCollection(15, COUNT, new Second());
dataset.setTimeBase(new Second(seconds, minutes, hours, date, month, year));

    dataset.addSeries(gaussianData(), 0, "Currency Rate");

       chart= createChart(dataset);

        timer = new Timer(15000, new ActionListener() {

            float[] newData = new float[15];

            @Override
            public void actionPerformed(ActionEvent e) {
              for(i=0;i<15;i++)
                newData[i] = randomValue();
                
                dataset.advanceTime();
                dataset.appendData(newData);
            }
        });

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EventQueue.invokeLater(new Runnable() {
            public void run() {
                PrepareChart chart = new PrepareChart(); 
                System.out.println("In caht getter methoed");
                chart.start();[i]// call start method of this class which start timer[/i]
            }
        });