Building Data Mining Tools Using JDM - Java Data Mining: Strategy, Standard, and Practice - page 357

5. Interval lInterval

6. mSelectedContinuousStatistics.getIntervals()[iRowIndex];

7. switch (iColumnIndex) {

8. case 0:

9. return intervalToString(lInterval);

10. case 1:

11. return new Long(

12. mSelectedContinuousStatistics.getFrequency(

13. lInterval));

14. case 2:

15. return new Double(

16. mSelectedContinuousStatistics.getSum(

17. lInterval));

18. case 3:

19. return new Double(

20. mSelectedContinuousStatistics.getSumOfSquares(

21. lInterval));

22. }

23. return null;

24. }

The code for intervalToString is shown below. It uses the closure
type to produce a readable representation of the interval.

1. private static String intervalToString(Interval iInterval) {
2. String lStart "";

3. String lEnd "";

4. String lString;

5. if (iInterval.getIntervalClosure().

6. equals(IntervalClosure.closedClosed)) {

7. lStart "[";

8. lEnd "]";

9. } else if (iInterval.getIntervalClosure().

10. equals(IntervalClosure.closedOpen)) {

11. lStart "[";

12. lEnd "[";

13. } else if (iInterval.getIntervalClosure().

14. equals(IntervalClosure.openClosed)) {

15. lStart "]";

16. lEnd "]";

17. } else if (iInterval.getIntervalClosure().

18. equals(IntervalClosure.openOpen)) {

19. lStart "]";

20. lEnd "[";

21. }

22. lString lStart String.valueOf(

23. iInterval.getStartPoint()) " ; "

24. String.valueOf(iInterval.getEndPoint()) lEnd;

25. return lString;

26.}