Examples of java.util.Calendar.roll()

java.util.Calendar.roll()
Adds or subtracts (up/down) a single unit of time on the given time field without changing larger fields. For example, to roll the current date up by one day, you can achieve it by calling:
roll(Calendar.DATE, true). When rolling on the year or Calendar.YEAR field, it will roll the year value in the range between 1 and the value returned by calling getMaximum(Calendar.YEAR). When rolling on the month or Calendar.MONTH field, other fields like date might conflict and, need to be changed. For instance, rolling the month on the date 01/31/96 will result in 02/29/96. When rolling on the hour-in-day or Calendar.HOUR_OF_DAY field, it will roll the hour value in the range between 0 and 23, which is zero-based. @param field the time field. @param up indicates if the value of the specified time field is to berolled up or rolled down. Use true if rolling up, false otherwise. @see Calendar#add(int,int) @see Calendar#set(int,int)

          label.setText("Fri");
        } else if (dayInt == Calendar.SATURDAY) {
          label.setText("Sat");
        }
        days.add(label);
        setupCalendar.roll(Calendar.DAY_OF_WEEK, true);
      }


      setupCalendar = (Calendar) calendar.clone();
      setupCalendar.set(Calendar.DAY_OF_MONTH, 1);
      int first = setupCalendar.get(Calendar.DAY_OF_WEEK);

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  private void update(int addend, boolean shifted){
    Calendar c = parseDate(getText());
    int pos = getCaretPosition();
    int field = posToField(pos);
    if (shifted){
      c.roll(field,true);
    } else {
      c.add(field,addend);
    }
    String newDate =dateFormat.format(c.getTime());
    setText(newDate);

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        return df;
    }


    private static long calculateExpiryDate() {
        Calendar cal = Calendar.getInstance();
        cal.roll(Calendar.MONTH, 1);
        return cal.getTime().getTime();
    }


    public static void fastChannelCopy(final InputStream in, final OutputStream out) throws IOException {

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    @Test
    public void testRetentionCoords() throws FalconException {
        org.apache.falcon.entity.v0.feed.Cluster cluster = FeedHelper.getCluster(feed, srcCluster.getName());
        final Calendar instance = Calendar.getInstance();
        instance.roll(Calendar.YEAR, 1);
        cluster.getValidity().setEnd(instance.getTime());


        OozieFeedMapper feedMapper = new OozieFeedMapper(feed);
        List<COORDINATORAPP> coords = feedMapper.getCoordinators(srcCluster, new Path("/projects/falcon/"));
        COORDINATORAPP coord = coords.get(0);

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    otherDate.add(Calendar.YEAR, 1);
    assertEquals(0, taskService.createTaskQuery().dueDate(otherDate.getTime()).count());


    Calendar priorDate = Calendar.getInstance();
    priorDate.setTime(dueDate);
    priorDate.roll(Calendar.YEAR, -1);
    assertEquals(1, taskService.createTaskQuery().dueAfter(priorDate.getTime())
        .count());


    assertEquals(1, taskService.createTaskQuery()
        .dueBefore(otherDate.getTime()).count());

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        return df;
    }


    private static long calculateExpiryDate() {
        Calendar cal = Calendar.getInstance();
        cal.roll(Calendar.MONTH, 1);
        return cal.getTime().getTime();
    }


    public static void fastChannelCopy(final InputStream in, final OutputStream out) throws IOException {

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  @Test
  public void shouldntDoNothingWhenFinalDateNotExpired() {


    Calendar calendar = Calendar.getInstance();
    calendar.roll(Calendar.DAY_OF_MONTH, 1); // rest one day for finish the sprint


    Sprint sprint = new Sprint();
    sprint.setFinalDate(calendar.getTime());
    sprint.setSprintStatus(SprintStatus.RUNNING);

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     * all story in status different of done should changing status to backlog.
     *
     */


    Calendar calendar = Calendar.getInstance();
    calendar.roll(Calendar.DAY_OF_MONTH, -1); // sprint finished


    Sprint sprint = new Sprint();
    sprint.setFinalDate(calendar.getTime());
    sprint.setSprintStatus(SprintStatus.RUNNING);

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     * all story in status different of done should changing status to backlog.
     *
     */


    Calendar calendar = Calendar.getInstance();
    calendar.roll(Calendar.DAY_OF_MONTH, -1); // sprint finished


    Sprint sprint = new Sprint();
    sprint.setFinalDate(calendar.getTime());
    sprint.setSprintStatus(SprintStatus.RUNNING);

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     * all story in status different of done should changing status for todo.
     *
     */


    Calendar calendar = Calendar.getInstance();
    calendar.roll(Calendar.DAY_OF_MONTH, -1); // sprint finished


    Sprint sprint = new Sprint();
    sprint.setFinalDate(calendar.getTime());
    sprint.setSprintStatus(SprintStatus.RUNNING);

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