final class Duration extends TemporalAmount with Ordered[Duration] with Serializable
A time-based amount of time, such as '34.5 seconds'.
This class models a quantity or amount of time in terms of seconds and nanoseconds.
It can be accessed using other duration-based units, such as minutes and hours.
In addition, the DAYS
unit can be used and is treated as
exactly equal to 24 hours, thus ignoring daylight savings effects.
See Period
for the date-based equivalent to this class.
A physical duration could be of infinite length.
For practicality, the duration is stored with constraints similar to Instant
.
The duration uses nanosecond resolution with a maximum value of the seconds that can
be held in a long
. This is greater than the current estimated age of the universe.
The range of a duration requires the storage of a number larger than a long
.
To achieve this, the class stores a long
representing seconds and an int
representing nanosecond-of-second, which will always be between 0 and 999,999,999.
The duration is measured in "seconds", but these are not necessarily identical to
the scientific "SI second" definition based on atomic clocks.
This difference only impacts durations measured near a leap-second and should not affect
most applications.
See Instant
for a discussion as to the meaning of the second and time-scales.
Specification for implementors
This class is immutable and thread-safe.
Constructs an instance of Duration
using seconds and nanoseconds.
- Annotations
- @SerialVersionUID()
- Alphabetic
- By Inheritance
- Duration
- Serializable
- Ordered
- Comparable
- TemporalAmount
- AnyRef
- Any
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-
final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
- Definition Classes
- AnyRef → Any
-
def
<(that: Duration): Boolean
- Definition Classes
- Ordered
-
def
<=(that: Duration): Boolean
- Definition Classes
- Ordered
-
final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
def
>(that: Duration): Boolean
- Definition Classes
- Ordered
-
def
>=(that: Duration): Boolean
- Definition Classes
- Ordered
-
def
abs: Duration
Returns a copy of this duration with a positive length.
Returns a copy of this duration with a positive length.
This method returns a positive duration by effectively removing the sign from any negative total length. For example,
PT-1.3S
will be returned asPT1.3S
.This instance is immutable and unaffected by this method call.
- returns
a { @code Duration} based on this duration with an absolute length, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
addTo(temporal: Temporal): Temporal
Adds this duration to the specified temporal object.
Adds this duration to the specified temporal object.
This returns a temporal object of the same observable type as the input with this duration added.
In most cases, it is clearer to reverse the calling pattern by using
Temporal#plus(TemporalAmount)
.// these two lines are equivalent, but the second approach is recommended dateTime = thisDuration.addTo(dateTime); dateTime = dateTime.plus(thisDuration);
The calculation will add the seconds, then nanos. Only non-zero amounts will be added.
This instance is immutable and unaffected by this method call.
- temporal
the temporal object to adjust, not null
- returns
an object of the same type with the adjustment made, not null
- Definition Classes
- Duration → TemporalAmount
- Exceptions thrown
ArithmeticException
if numeric overflow occursDateTimeException
if unable to add
-
final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
-
def
clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
-
def
compare(otherDuration: Duration): Int
Compares this duration to the specified
Duration
.Compares this duration to the specified
Duration
.The comparison is based on the total length of the durations. It is "consistent with equals", as defined by
Comparable
.- otherDuration
the other duration to compare to, not null
- returns
the comparator value, negative if less, positive if greater
- Definition Classes
- Duration → Ordered
-
def
compareTo(other: Duration): Int
- Definition Classes
- Duration → Ordered → Comparable
-
def
dividedBy(divisor: Long): Duration
Returns a copy of this duration divided by the specified value.
Returns a copy of this duration divided by the specified value.
This instance is immutable and unaffected by this method call.
- divisor
the value to divide the duration by, positive or negative, not zero
- returns
a { @code Duration} based on this duration divided by the specified divisor, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(other: Any): Boolean
Checks if this duration is equal to the specified
Duration
.Checks if this duration is equal to the specified
Duration
.The comparison is based on the total length of the durations.
- other
the other duration, null returns false
- returns
true if the other duration is equal to this one
- Definition Classes
- Duration → AnyRef → Any
-
def
finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
-
def
get(unit: TemporalUnit): Long
Gets the amount associated with the specified unit.
Gets the amount associated with the specified unit.
- unit
the unit to get, not null
- returns
the amount of the unit
- Definition Classes
- Duration → TemporalAmount
- Exceptions thrown
DateTimeException
if the amount cannot be obtained
-
final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
-
def
getNano: Int
Gets the number of nanoseconds within the second in this duration.
Gets the number of nanoseconds within the second in this duration.
The length of the duration is stored using two fields - seconds and nanoseconds. The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to the length in seconds. The total duration is defined by calling this method and
#getSeconds()
.A
Duration
represents a directed distance between two points on the time-line. A negative duration is expressed by the negative sign of the seconds part. A duration of -1 nanosecond is stored as -1 seconds plus 999,999,999 nanoseconds.- returns
the nanoseconds within the second part of the length of the duration, from 0 to 999,999,999
-
def
getSeconds: Long
Gets the number of seconds in this duration.
Gets the number of seconds in this duration.
The length of the duration is stored using two fields - seconds and nanoseconds. The nanoseconds part is a value from 0 to 999,999,999 that is an adjustment to the length in seconds. The total duration is defined by calling this method and
#getNano()
.A
Duration
represents a directed distance between two points on the time-line. A negative duration is expressed by the negative sign of the seconds part. A duration of -1 nanosecond is stored as -1 seconds plus 999,999,999 nanoseconds.- returns
the whole seconds part of the length of the duration, positive or negative
-
def
getUnits: List[TemporalUnit]
Gets the list of units, from largest to smallest, that fully define this amount.
Gets the list of units, from largest to smallest, that fully define this amount.
- returns
the list of units.
- Definition Classes
- Duration → TemporalAmount
-
def
hashCode(): Int
A hash code for this duration.
A hash code for this duration.
- returns
a suitable hash code
- Definition Classes
- Duration → AnyRef → Any
-
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
def
isNegative: Boolean
Checks if this duration is negative, excluding zero.
Checks if this duration is negative, excluding zero.
A
Duration
represents a directed distance between two points on the time-line and can therefore be positive, zero or negative. This method checks whether the length is less than zero.- returns
true if this duration has a total length less than zero
-
def
isZero: Boolean
Checks if this duration is zero length.
Checks if this duration is zero length.
A
Duration
represents a directed distance between two points on the time-line and can therefore be positive, zero or negative. This method checks whether the length is zero.- returns
true if this duration has a total length equal to zero
-
def
minus(amountToSubtract: Long, unit: TemporalUnit): Duration
Returns a copy of this duration with the specified duration subtracted.
Returns a copy of this duration with the specified duration subtracted.
The duration amount is measured in terms of the specified unit. Only a subset of units are accepted by this method. The unit must either have an
exact duration
or beChronoUnit#DAYS
which is treated as 24 hours. Other units throw an exception.This instance is immutable and unaffected by this method call.
- amountToSubtract
the amount of the period, measured in terms of the unit, positive or negative
- unit
the unit that the period is measured in, must have an exact duration, not null
- returns
a { @code Duration} based on this duration with the specified duration subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minus(duration: Duration): Duration
Returns a copy of this duration with the specified duration subtracted.
Returns a copy of this duration with the specified duration subtracted.
This instance is immutable and unaffected by this method call.
- duration
the duration to subtract, positive or negative, not null
- returns
a { @code Duration} based on this duration with the specified duration subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusDays(daysToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in 24 hour days subtracted.
Returns a copy of this duration with the specified duration in 24 hour days subtracted.
This instance is immutable and unaffected by this method call.
- daysToSubtract
the days to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified days subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusHours(hoursToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in hours subtracted.
Returns a copy of this duration with the specified duration in hours subtracted.
This instance is immutable and unaffected by this method call.
- hoursToSubtract
the hours to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified hours subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusMillis(millisToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in milliseconds subtracted.
Returns a copy of this duration with the specified duration in milliseconds subtracted.
This instance is immutable and unaffected by this method call.
- millisToSubtract
the milliseconds to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified milliseconds subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusMinutes(minutesToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in minutes subtracted.
Returns a copy of this duration with the specified duration in minutes subtracted.
This instance is immutable and unaffected by this method call.
- minutesToSubtract
the minutes to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified minutes subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusNanos(nanosToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in nanoseconds subtracted.
Returns a copy of this duration with the specified duration in nanoseconds subtracted.
This instance is immutable and unaffected by this method call.
- nanosToSubtract
the nanoseconds to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified nanoseconds subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
minusSeconds(secondsToSubtract: Long): Duration
Returns a copy of this duration with the specified duration in seconds subtracted.
Returns a copy of this duration with the specified duration in seconds subtracted.
This instance is immutable and unaffected by this method call.
- secondsToSubtract
the seconds to subtract, positive or negative
- returns
a { @code Duration} based on this duration with the specified seconds subtracted, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
multipliedBy(multiplicand: Long): Duration
Returns a copy of this duration multiplied by the scalar.
Returns a copy of this duration multiplied by the scalar.
This instance is immutable and unaffected by this method call.
- multiplicand
the value to multiply the duration by, positive or negative
- returns
a { @code Duration} based on this duration multiplied by the specified scalar, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
negated: Duration
Returns a copy of this duration with the length negated.
Returns a copy of this duration with the length negated.
This method swaps the sign of the total length of this duration. For example,
PT1.3S
will be returned asPT-1.3S
.This instance is immutable and unaffected by this method call.
- returns
a { @code Duration} based on this duration with the amount negated, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
final
def
notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
-
final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
-
def
plus(amountToAdd: Long, unit: TemporalUnit): Duration
Returns a copy of this duration with the specified duration added.
Returns a copy of this duration with the specified duration added.
The duration amount is measured in terms of the specified unit. Only a subset of units are accepted by this method. The unit must either have an
exact duration
or beChronoUnit#DAYS
which is treated as 24 hours. Other units throw an exception.This instance is immutable and unaffected by this method call.
- amountToAdd
the amount of the period, measured in terms of the unit, positive or negative
- unit
the unit that the period is measured in, must have an exact duration, not null
- returns
a { @code Duration} based on this duration with the specified duration added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plus(duration: Duration): Duration
Returns a copy of this duration with the specified duration added.
Returns a copy of this duration with the specified duration added.
This instance is immutable and unaffected by this method call.
- duration
the duration to add, positive or negative, not null
- returns
a { @code Duration} based on this duration with the specified duration added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusDays(daysToAdd: Long): Duration
Returns a copy of this duration with the specified duration in 24 hour days added.
Returns a copy of this duration with the specified duration in 24 hour days added.
This instance is immutable and unaffected by this method call.
- daysToAdd
the days to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified days added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusHours(hoursToAdd: Long): Duration
Returns a copy of this duration with the specified duration in hours added.
Returns a copy of this duration with the specified duration in hours added.
This instance is immutable and unaffected by this method call.
- hoursToAdd
the hours to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified hours added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusMillis(millisToAdd: Long): Duration
Returns a copy of this duration with the specified duration in milliseconds added.
Returns a copy of this duration with the specified duration in milliseconds added.
This instance is immutable and unaffected by this method call.
- millisToAdd
the milliseconds to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified milliseconds added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusMinutes(minutesToAdd: Long): Duration
Returns a copy of this duration with the specified duration in minutes added.
Returns a copy of this duration with the specified duration in minutes added.
This instance is immutable and unaffected by this method call.
- minutesToAdd
the minutes to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified minutes added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusNanos(nanosToAdd: Long): Duration
Returns a copy of this duration with the specified duration in nanoseconds added.
Returns a copy of this duration with the specified duration in nanoseconds added.
This instance is immutable and unaffected by this method call.
- nanosToAdd
the nanoseconds to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified nanoseconds added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
plusSeconds(secondsToAdd: Long): Duration
Returns a copy of this duration with the specified duration in seconds added.
Returns a copy of this duration with the specified duration in seconds added.
This instance is immutable and unaffected by this method call.
- secondsToAdd
the seconds to add, positive or negative
- returns
a { @code Duration} based on this duration with the specified seconds added, not null
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
subtractFrom(temporal: Temporal): Temporal
Subtracts this duration from the specified temporal object.
Subtracts this duration from the specified temporal object.
This returns a temporal object of the same observable type as the input with this duration subtracted.
In most cases, it is clearer to reverse the calling pattern by using
Temporal#minus(TemporalAmount)
.// these two lines are equivalent, but the second approach is recommended dateTime = thisDuration.subtractFrom(dateTime); dateTime = dateTime.minus(thisDuration);
The calculation will subtract the seconds, then nanos. Only non-zero amounts will be added.
This instance is immutable and unaffected by this method call.
- temporal
the temporal object to adjust, not null
- returns
an object of the same type with the adjustment made, not null
- Definition Classes
- Duration → TemporalAmount
- Exceptions thrown
ArithmeticException
if numeric overflow occursDateTimeException
if unable to subtract
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toDays: Long
Gets the number of days in this duration.
Gets the number of days in this duration.
This returns the total number of days in the duration by dividing the number of seconds by 86400. This is based on the standard definition of a day as 24 hours.
This instance is immutable and unaffected by this method call.
- returns
the number of days in the duration, may be negative
-
def
toHours: Long
Gets the number of hours in this duration.
Gets the number of hours in this duration.
This returns the total number of hours in the duration by dividing the number of seconds by 3600.
This instance is immutable and unaffected by this method call.
- returns
the number of hours in the duration, may be negative
-
def
toMillis: Long
Converts this duration to the total length in milliseconds.
Converts this duration to the total length in milliseconds.
If this duration is too large to fit in a
long
milliseconds, then an exception is thrown.If this duration has greater than millisecond precision, then the conversion will drop any excess precision information as though the amount in nanoseconds was subject to integer division by one million.
- returns
the total length of the duration in milliseconds
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
toMinutes: Long
Gets the number of minutes in this duration.
Gets the number of minutes in this duration.
This returns the total number of minutes in the duration by dividing the number of seconds by 60.
This instance is immutable and unaffected by this method call.
- returns
the number of minutes in the duration, may be negative
-
def
toNanos: Long
Converts this duration to the total length in nanoseconds expressed as a
long
.Converts this duration to the total length in nanoseconds expressed as a
long
.If this duration is too large to fit in a
long
nanoseconds, then an exception is thrown.- returns
the total length of the duration in nanoseconds
- Exceptions thrown
ArithmeticException
if numeric overflow occurs
-
def
toString(): String
A string representation of this duration using ISO-8601 seconds based representation, such as
PT8H6M12.345S
.A string representation of this duration using ISO-8601 seconds based representation, such as
PT8H6M12.345S
.The format of the returned string will be
PTnHnMnS
, where n is the relevant hours, minutes or seconds part of the duration. Any fractional seconds are placed after a decimal point i the seconds section. If a section has a zero value, it is omitted. The hours, minutes and seconds will all have the same sign.Examples:
"20.345 seconds" -> "PT20.345S "15 minutes" (15 * 60 seconds) -> "PT15M" "10 hours" (10 * 3600 seconds) -> "PT10H" "2 days" (2 * 86400 seconds) -> "PT48H"
Note that multiples of 24 hours are not output as days to avoid confusion withPeriod
.- returns
an ISO-8601 representation of this duration, not null
- Definition Classes
- Duration → AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... ) @native()
-
def
withNanos(nanoOfSecond: Int): Duration
Returns a copy of this duration with the specified nano-of-second.
Returns a copy of this duration with the specified nano-of-second.
This returns a duration with the specified nano-of-second, retaining the seconds part of this duration.
This instance is immutable and unaffected by this method call.
- nanoOfSecond
the nano-of-second to represent, from 0 to 999,999,999
- returns
a { @code Duration} based on this period with the requested nano-of-second, not null
- Exceptions thrown
DateTimeException
if the nano-of-second is invalid
-
def
withSeconds(seconds: Long): Duration
Returns a copy of this duration with the specified amount of seconds.
Returns a copy of this duration with the specified amount of seconds.
This returns a duration with the specified seconds, retaining the nano-of-second part of this duration.
This instance is immutable and unaffected by this method call.
- seconds
the seconds to represent, may be negative
- returns
a { @code Duration} based on this period with the requested seconds, not null