Return type  Name and parameters 

Period

between(Year startInclusive, Year endExclusive)
Obtains a Period consisting of the number of years between two Year instances. 
Period

between(YearMonth startInclusive, YearMonth endExclusive)
Obtains a Period consisting of the number of years and months between two YearMonth instances. 
Period

minus(long days)
Returns a Period that is days days shorter than this period.

Period

multiply(int scalar)
Supports the multiply operator; equivalent to calling the Period#multipliedBy(int) method. 
Period

negative()
Supports the unary minus operator; equivalent to calling the Period#negated() method. 
Period

next()
Returns a Period that is one day longer than this period. 
Period

plus(long days)
Returns a Period that is days days longer than this period.

Period

positive()
Supports the unary plus operator; returns a Period with all unit values positive. 
Period

previous()
Returns a Period that is one day shorter than this period. 
addShutdownHook
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, any
, asBoolean
, asType
, average
, collect
, collect
, collect
, contains
, count
, dump
, each
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, equals
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, use
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, withTraits
Obtains a Period consisting of the number of years between two Year instances. The months and days of the Period will be zero. The result of this method can be a negative period if the end is before the start.
startInclusive
 the start Year, inclusive, not nullendExclusive
 the end Year, exclusive, not nullObtains a Period consisting of the number of years and months between two YearMonth instances. The days of the Period will be zero. The result of this method can be a negative period if the end is before the start.
startInclusive
 the start YearMonth, inclusive, not nullendExclusive
 the end YearMonth, exclusive, not nullReturns a Period that is days
days shorter than this period.
No normalization is performed.
days
 the number of days to decrease this Period bySupports the multiply operator; equivalent to calling the Period#multipliedBy(int) method.
scalar
 a scalar to multiply each unit bySupports the unary minus operator; equivalent to calling the Period#negated() method.
Returns a Period that is one day longer than this period. No normalization is performed.
Returns a Period that is days
days longer than this period.
No normalization is performed.
days
 the number of days to increase this Period bySupports the unary plus operator; returns a Period with all unit values positive. For example, a period of "2 years, 3 months, and 4 days" would result in a period of "2 years, 3 months, and 4 days." No normalization is performed.