returning multiple series from method

Question

I have the following code. I want to return both series of the TimeSeries Collection from the one method. I have investigated multiple returns from a method but i cant get them to work.

private XYDataset createDataset(ArrayList<rollingS> lst,ArrayList<rollingS> lst1)
    {
        final TimeSeries series = new TimeSeries("Random Data");
        final TimeSeries series1 = new TimeSeries("Random Data1");

        for (rollingS elem_ : lst) {

            Integer.parseInt(elem_.getFuelTypeGeneration());
            String datetimestring = elem_.getSettDate() + elem_.getPublishingPeriodCommencingTime();

            series.addOrUpdate(new Minute(Integer.parseInt(datetimestring.substring(13, 15)), Integer.parseInt(datetimestring.substring(10, 12)), Integer.parseInt(datetimestring.substring(8, 10)), Integer.parseInt(datetimestring.substring(5, 7)), Integer.parseInt(datetimestring.substring(0, 4))), Integer.parseInt(elem_.getFuelTypeGeneration()));

        }

         for (rollingS elem_ : lst1) {

            Integer.parseInt(elem_.getFuelTypeGeneration());
            String datetimestring = elem_.getSettDate() + elem_.getPublishingPeriodCommencingTime();

            series1.addOrUpdate(new Minute(Integer.parseInt(datetimestring.substring(13, 15)), Integer.parseInt(datetimestring.substring(10, 12)), Integer.parseInt(datetimestring.substring(8, 10)), Integer.parseInt(datetimestring.substring(5, 7)), Integer.parseInt(datetimestring.substring(0, 4))), Integer.parseInt(elem_.getFuelTypeGeneration()));

        }


        return new TimeSeriesCollection(series);
    }

Sahil Garg · Accepted Answer · 2020-06-13T02:46:44.960

1

Return a Collection of TimeSeries objects

private List<TimeSeries> createDataset(ArrayList<rollingS> lst,ArrayList<rollingS> lst1) {
    // your code
    List<TimeSeries> timeSeriesList = new ArrayList<>();
    timeSeriesList.add(series);
    timeSeriesList.add(series1);
    return timeSeriesList;
}

Create a new Class containing both the XYset

class XY {
   private TimeSeries X;
   private TimeSeries Y;

   // GETTERS AND SETTERS
    public TimeSeries getX() {
        return X;
    }

    public void setX(TimeSeries x) {
        X = x;
    }

    public TimeSeries getY() {
        return Y;
    }

    public void setY(TimeSeries y) {
        Y = y;
    }

}

private XY createDataset(ArrayList<rollingS> lst,ArrayList<rollingS> lst1) {

    // your code
    XY obj = new XY<>();
    obj.setX(series);
    obj.sety(series1);
    return obj;
}

edited Jun 13 '20 at 02:46

answered Jun 12 '20 at 16:24

Sahil Garg

167
6

Could i have some help creating the getters and setters? – inky Jun 12 '20 at 17:49
check my last edit. I recommend to use IDE (like intellij, eclipse etc.) to create getters and setters. please follow [create getter setters in intellij](https://stackoverflow.com/questions/16988504/intellij-code-completion-for-all-setter-getter-methods-of-local-variable-object) and [create getter setters in eclipse](https://stackoverflow.com/questions/7221691/is-there-a-way-to-automatically-generate-getters-and-setters-in-eclipse) – Sahil Garg Jun 13 '20 at 02:52

n247s · Answer 2 · 2020-06-12T15:20:45.293

0

Returning multiple values from a method is not possible. How would you access them otherwise?

Best alternative is to return a small DataStructure containing both return values.

You can choose to return an Array or a Collection (hint Arrays#asList).

Or you could create a small wrapper class containing both values which you can return.

edited Jun 12 '20 at 15:20

answered Jun 12 '20 at 15:14

n247s

1,898
1
12
30

returning multiple series from method

2 Answers2