0523: public enum Day                                                  // Day.java
0524: {
0525:    Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday;
0526:    public String toString()
0527:    {
0528:       return super.toString().substring(0, 3);
0529:    }
0530:    private static Day[] iDayValues = Day.values();
0531:    public static Day getFirst()
0532:    {
0533:       return iDayValues[0];
0534:    }
0535:    public boolean isLast()
0536:    {
0537:       return this==iDayValues[iDayValues.length - 1];
0538:    }
0539:    public Day getNext()
0540:    {
0541:       int tNewPos = ordinal() + 1;
0542:       if (tNewPos==iDayValues.length)
0543:          return iDayValues[0];
0544:       else
0545:          return iDayValues[tNewPos];
0546:    }
0547: }