java.lang.Object
- org.joda.time.base.AbstractDuration
- - org.joda.time.base.BaseDuration
  - - org.joda.time.Duration

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable, ReadableDuration
```
public final class Duration
extends BaseDuration
implements ReadableDuration, java.io.Serializable
```
An immutable duration specifying a length of time in milliseconds.
A duration is defined by a fixed number of milliseconds. There is no concept of fields, such as days or seconds, as these fields can vary in length. A duration may be converted to a Period to obtain field values. This conversion will typically cause a loss of precision however.
Duration is thread-safe and immutable.

Since:

1.0

Author:

Brian S O'Neill, Stephen Colebourne

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static Duration ZERO
Constant representing zero millisecond duration

Constructor Summary

Constructors
Constructor	Description
`Duration(long duration)`	Creates a duration from the given millisecond duration.
`Duration(long startInstant, long endInstant)`	Creates a duration from the given interval endpoints.
`Duration(java.lang.Object duration)`	Creates a duration from the specified object using the `ConverterManager`.
`Duration(ReadableInstant start, ReadableInstant end)`	Creates a duration from the given interval endpoints.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`getStandardSeconds()`	Gets the length of this duration in seconds assuming 1000 milliseconds in a second.
`Duration`	`minus(long amount)`	Returns a new duration with this length minus that specified.
`Duration`	`minus(ReadableDuration amount)`	Returns a new duration with this length minus that specified.
`Duration`	`plus(long amount)`	Returns a new duration with this length plus that specified.
`Duration`	`plus(ReadableDuration amount)`	Returns a new duration with this length plus that specified.
`static Duration`	`standardDays(long days)`	Create a duration with the specified number of days assuming that there are the standard number of milliseconds in a day.
`static Duration`	`standardHours(long hours)`	Create a duration with the specified number of hours assuming that there are the standard number of milliseconds in an hour.
`static Duration`	`standardMinutes(long minutes)`	Create a duration with the specified number of minutes assuming that there are the standard number of milliseconds in a minute.
`static Duration`	`standardSeconds(long seconds)`	Create a duration with the specified number of seconds assuming that there are the standard number of milliseconds in a second.
`Duration`	`toDuration()`	Get this duration as an immutable `Duration` object by returning `this`.
`Seconds`	`toStandardSeconds()`	Converts this duration to a period in seconds assuming 1000 milliseconds in a second.
`Duration`	`withDurationAdded(long durationToAdd, int scalar)`	Returns a new duration with this length plus that specified multiplied by the scalar.
`Duration`	`withDurationAdded(ReadableDuration durationToAdd, int scalar)`	Returns a new duration with this length plus that specified multiplied by the scalar.
`Duration`	`withMillis(long duration)`	Creates a new Duration instance with a different milisecond length.

Methods inherited from class org.joda.time.base.BaseDuration
getMillis, setMillis, toIntervalFrom, toIntervalTo, toPeriod, toPeriod, toPeriod, toPeriodFrom, toPeriodFrom, toPeriodTo, toPeriodTo

Methods inherited from class org.joda.time.base.AbstractDuration
compareTo, equals, hashCode, isEqual, isLongerThan, isShorterThan, toPeriod, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.joda.time.ReadableDuration
compareTo, equals, getMillis, hashCode, isEqual, isLongerThan, isShorterThan, toPeriod, toString

- Field Detail
  - ZERO
```
public static final Duration ZERO
```
    Constant representing zero millisecond duration
- Constructor Detail
  - Duration
```
public Duration(long duration)
```
    Creates a duration from the given millisecond duration.
    
    Parameters:
    
    duration - the duration, in milliseconds
  - Duration
```
public Duration(long startInstant,
                long endInstant)
```
    Creates a duration from the given interval endpoints.
    
    Parameters:
    
    startInstant - interval start, in milliseconds
    
    endInstant - interval end, in milliseconds
    
    Throws:
    
    java.lang.ArithmeticException - if the duration exceeds a 64 bit long
  - Duration
```
public Duration(ReadableInstant start,
                ReadableInstant end)
```
    Creates a duration from the given interval endpoints.
    
    Parameters:
    
    start - interval start, null means now
    
    end - interval end, null means now
    
    Throws:
    
    java.lang.ArithmeticException - if the duration exceeds a 64 bit long
  - Duration
```
public Duration(java.lang.Object duration)
```
    Creates a duration from the specified object using the ConverterManager.
    
    Parameters:
    
    duration - duration to convert
    
    Throws:
    
    java.lang.IllegalArgumentException - if duration is invalid
- Method Detail
  - standardDays
```
public static Duration standardDays(long days)
```
    Create a duration with the specified number of days assuming that there are the standard number of milliseconds in a day.
    This method assumes that there are 24 hours in a day, 60 minutes in an hour, 60 seconds in a minute and 1000 milliseconds in a second. This will be true for most days, however days with Daylight Savings changes will not have 24 hours, so use this method with care.
    A Duration is a representation of an amount of time. If you want to express the concepts of 'days' you should consider using the Days class.
    
    Parameters:
    
    days - the number of standard days in this duration
    
    Returns:
    
    the duration, never null
    
    Throws:
    
    java.lang.ArithmeticException - if the days value is too large
    
    Since:
    
    1.6
  - standardHours
```
public static Duration standardHours(long hours)
```
    Create a duration with the specified number of hours assuming that there are the standard number of milliseconds in an hour.
    This method assumes that there are 60 minutes in an hour, 60 seconds in a minute and 1000 milliseconds in a second. All currently supplied chronologies use this definition.
    A Duration is a representation of an amount of time. If you want to express the concepts of 'hours' you should consider using the Hours class.
    
    Parameters:
    
    hours - the number of standard hours in this duration
    
    Returns:
    
    the duration, never null
    
    Throws:
    
    java.lang.ArithmeticException - if the hours value is too large
    
    Since:
    
    1.6
  - standardMinutes
```
public static Duration standardMinutes(long minutes)
```
    Create a duration with the specified number of minutes assuming that there are the standard number of milliseconds in a minute.
    This method assumes that there are 60 seconds in a minute and 1000 milliseconds in a second. All currently supplied chronologies use this definition.
    A Duration is a representation of an amount of time. If you want to express the concepts of 'minutes' you should consider using the Minutes class.
    
    Parameters:
    
    minutes - the number of standard minutes in this duration
    
    Returns:
    
    the duration, never null
    
    Throws:
    
    java.lang.ArithmeticException - if the minutes value is too large
    
    Since:
    
    1.6
  - standardSeconds
```
public static Duration standardSeconds(long seconds)
```
    Create a duration with the specified number of seconds assuming that there are the standard number of milliseconds in a second.
    This method assumes that there are 1000 milliseconds in a second. All currently supplied chronologies use this definition.
    A Duration is a representation of an amount of time. If you want to express the concepts of 'seconds' you should consider using the Seconds class.
    
    Parameters:
    
    seconds - the number of standard seconds in this duration
    
    Returns:
    
    the duration, never null
    
    Throws:
    
    java.lang.ArithmeticException - if the seconds value is too large
    
    Since:
    
    1.6
  - getStandardSeconds
```
public long getStandardSeconds()
```
    Gets the length of this duration in seconds assuming 1000 milliseconds in a second.
    This returns getMillis() / 1000. The result is an integer division, so 2999 millis returns 2 seconds.
    
    Returns:
    
    the length of the duration in standard seconds
    
    Since:
    
    1.6
  - toDuration
```
public Duration toDuration()
```
    Get this duration as an immutable Duration object by returning this.
    
    Specified by:
    
    toDuration in interface ReadableDuration
    
    Overrides:
    
    toDuration in class AbstractDuration
    
    Returns:
    
    this
  - toStandardSeconds
```
public Seconds toStandardSeconds()
```
    Converts this duration to a period in seconds assuming 1000 milliseconds in a second.
    This method allows you to convert between a duration and a period.
    
    Returns:
    
    a period representing the number of standard seconds in this period, never null
    
    Throws:
    
    java.lang.ArithmeticException - if the number of seconds is too large to be represented
    
    Since:
    
    1.6
  - withMillis
```
public Duration withMillis(long duration)
```
    Creates a new Duration instance with a different milisecond length.
    
    Parameters:
    
    duration - the new length of the duration
    
    Returns:
    
    the new duration instance
  - withDurationAdded
```
public Duration withDurationAdded(long durationToAdd,
                                  int scalar)
```
    Returns a new duration with this length plus that specified multiplied by the scalar. This instance is immutable and is not altered.
    If the addition is zero, this instance is returned.
    
    Parameters:
    
    durationToAdd - the duration to add to this one
    
    scalar - the amount of times to add, such as -1 to subtract once
    
    Returns:
    
    the new duration instance
  - withDurationAdded
```
public Duration withDurationAdded(ReadableDuration durationToAdd,
                                  int scalar)
```
    Returns a new duration with this length plus that specified multiplied by the scalar. This instance is immutable and is not altered.
    If the addition is zero, this instance is returned.
    
    Parameters:
    
    durationToAdd - the duration to add to this one, null means zero
    
    scalar - the amount of times to add, such as -1 to subtract once
    
    Returns:
    
    the new duration instance
  - plus
```
public Duration plus(long amount)
```
    Returns a new duration with this length plus that specified. This instance is immutable and is not altered.
    If the addition is zero, this instance is returned.
    
    Parameters:
    
    amount - the duration to add to this one
    
    Returns:
    
    the new duration instance
  - plus
```
public Duration plus(ReadableDuration amount)
```
    Returns a new duration with this length plus that specified. This instance is immutable and is not altered.
    If the amount is zero, this instance is returned.
    
    Parameters:
    
    amount - the duration to add to this one, null means zero
    
    Returns:
    
    the new duration instance
  - minus
```
public Duration minus(long amount)
```
    Returns a new duration with this length minus that specified. This instance is immutable and is not altered.
    If the addition is zero, this instance is returned.
    
    Parameters:
    
    amount - the duration to take away from this one
    
    Returns:
    
    the new duration instance
  - minus
```
public Duration minus(ReadableDuration amount)
```
    Returns a new duration with this length minus that specified. This instance is immutable and is not altered.
    If the amount is zero, this instance is returned.
    
    Parameters:
    
    amount - the duration to take away from this one, null means zero
    
    Returns:
    
    the new duration instance

Class Duration

Field Summary

Constructor Summary

Method Summary

Methods inherited from class org.joda.time.base.BaseDuration

Methods inherited from class org.joda.time.base.AbstractDuration

Methods inherited from class java.lang.Object

Methods inherited from interface org.joda.time.ReadableDuration

Field Detail

ZERO

Constructor Detail

Duration

Duration

Duration

Duration

Method Detail

standardDays

standardHours

standardMinutes

standardSeconds

getStandardSeconds

toDuration

toStandardSeconds

withMillis

withDurationAdded

withDurationAdded

plus

plus

minus

minus