Examples of org.joda.time.DateTime.minusYears()

org.joda.time.DateTime.minusYears()
Returns a copy of this datetime minus the specified number of years.
The calculation will do its best to only change the year field retaining the same month of year. However, in certain circumstances, it may be necessary to alter smaller fields. For example, 2008-02-29 minus one year cannot result in 2007-02-29, so the day of month is adjusted to 2007-02-28.
The following three lines are identical in effect:
```
 DateTime subtracted = dt.minusYears(6); DateTime subtracted = dt.minus(Period.years(6)); DateTime subtracted = dt.withFieldAdded(DurationFieldType.years(), -6); 
```
This datetime instance is immutable and unaffected by this method call. @param years the amount of years to subtract, may be negative @return the new datetime minus the increased years @since 1.1

  private final LastRunPeriodFormatter formatter = new LastRunPeriodFormatter();


  @Test
  public void testFormatterNormal() {
    DateTime startDate = new DateTime();
    startDate = startDate.minusYears(1).minusMonths(12).minusHours(124).minusMinutes(25).minusSeconds(1);
    TaskRun mostRecentTaskRun = new TaskRun(startDate.toDate(), startDate.plusHours(8).toDate(), "", "", "", 1);
    String printLastRun = formatter.printLastRun(mostRecentTaskRun);
    assertEquals("2 years, 5 days, 4 hours and 25 minutes ago", printLastRun);
  }

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  }


  @Test
  public void testFormatterPluralForm() {
    DateTime startDate = new DateTime();
    startDate = startDate.minusYears(2).minusMonths(2).minusDays(2).minusHours(2).minusMinutes(2);
    TaskRun mostRecentTaskRun = new TaskRun(startDate.toDate(), startDate.plusHours(8).toDate(), "", "", "", 1);
    String printLastRun = formatter.printLastRun(mostRecentTaskRun);
    assertEquals("2 years, 2 months, 2 days, 2 hours and 2 minutes ago", printLastRun);
  }

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  }


  @Test
  public void testFormatterSingularForm() {
    DateTime startDate = new DateTime();
    startDate = startDate.minusYears(1).minusMonths(1).minusDays(1).minusHours(1).minusMinutes(1);
    TaskRun mostRecentTaskRun = new TaskRun(startDate.toDate(), startDate.plusHours(8).toDate(), "", "", "", 1);
    String printLastRun = formatter.printLastRun(mostRecentTaskRun);
    assertEquals("1 year, 1 month, 1 day, 1 hour and 1 minute ago", printLastRun);
  }

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    cboYearModel.removeAllElements();
    
    while(dateIterator.getYear() >=  this.lowerBound.getYear()){
      this.cboYear.addItem(new Year(dateIterator.getYear()));


      dateIterator = dateIterator.minusYears(1);
    }
    
    this.cboYear.addActionListener(this);
    
    if(selectedYear != null && cboYearModel.getSize() > 0){

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