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Asked: 2026-05-23T08:30:49+00:00

It does not seem straighforward. I am trying this: @Override public int compare(Period o1,

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It does not seem straighforward.

I am trying this:

@Override
public int compare(Period o1, Period o2) {
    return o1.toStandardDays().getDays() > o2.toStandardDays().getDays() ? -1 : (o1.toStandardDays().getDays() == o2.toStandardDays().getDays() ? 0 : 1);
}

But I get this exception:

java.lang.UnsupportedOperationException: Cannot convert to Days as this period contains months and months vary in length
    at org.joda.time.Period.checkYearsAndMonths(Period.java:1455)
    at org.joda.time.Period.toStandardDays(Period.java:1314)

I hoped Peroid would have an isLongerThan(Period p) method.

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1 Answer

  1. Editorial Team

    From the Joda Documentation:

    To compare the actual duration of two periods, convert both to durations using toDuration, an operation that emphasises that the result may differ according to the date you choose.

    The two toDuration methods are BasePeriod#toDurationTo(ReadableInstant) and BasePeriod#toDurationFrom(ReadableInstant). This means that you must choose either a start or end instant of this period in order to be able to compute its duration.

    If that is a problem for you, then you might want to directly use Duration instead of Period.

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