Android APIs
public enum

TimeUnit

extends Enum<TimeUnit>
java.lang.Object
   ↳ java.lang.Enum<java.util.concurrent.TimeUnit>
     ↳ java.util.concurrent.TimeUnit

Class Overview

A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units. A TimeUnit does not maintain time information, but only helps organize and use time representations that may be maintained separately across various contexts. A nanosecond is defined as one thousandth of a microsecond, a microsecond as one thousandth of a millisecond, a millisecond as one thousandth of a second, a minute as sixty seconds, an hour as sixty minutes, and a day as twenty four hours.

A TimeUnit is mainly used to inform time-based methods how a given timing parameter should be interpreted. For example, the following code will timeout in 50 milliseconds if the lock is not available:

 Lock lock = ...;
 if (lock.tryLock(50L, TimeUnit.MILLISECONDS)) ...
while this code will timeout in 50 seconds:
 Lock lock = ...;
 if (lock.tryLock(50L, TimeUnit.SECONDS)) ...
Note however, that there is no guarantee that a particular timeout implementation will be able to notice the passage of time at the same granularity as the given TimeUnit.

Summary

Enum Values
TimeUnit  DAYS  Time unit representing twenty four hours 
TimeUnit  HOURS  Time unit representing sixty minutes 
TimeUnit  MICROSECONDS  Time unit representing one thousandth of a millisecond  
TimeUnit  MILLISECONDS  Time unit representing one thousandth of a second  
TimeUnit  MINUTES  Time unit representing sixty seconds 
TimeUnit  NANOSECONDS  Time unit representing one thousandth of a microsecond  
TimeUnit  SECONDS  Time unit representing one second  
Public Methods
long convert(long sourceDuration, TimeUnit sourceUnit)
Converts the given time duration in the given unit to this unit.
void sleep(long timeout)
Performs a Thread.sleep using this time unit.
void timedJoin(Thread thread, long timeout)
Performs a timed Thread.join using this time unit.
void timedWait(Object obj, long timeout)
Performs a timed Object.wait using this time unit.
long toDays(long duration)
long toHours(long duration)
long toMicros(long duration)
long toMillis(long duration)
long toMinutes(long duration)
long toNanos(long duration)
long toSeconds(long duration)
static TimeUnit valueOf(String name)
final static TimeUnit[] values()
[Expand]
Inherited Methods
From class java.lang.Enum
From class java.lang.Object
From interface java.lang.Comparable

Enum Values

public static final TimeUnit DAYS

Added in API level 9

Time unit representing twenty four hours

public static final TimeUnit HOURS

Added in API level 9

Time unit representing sixty minutes

public static final TimeUnit MICROSECONDS

Added in API level 1

Time unit representing one thousandth of a millisecond

public static final TimeUnit MILLISECONDS

Added in API level 1

Time unit representing one thousandth of a second

public static final TimeUnit MINUTES

Added in API level 9

Time unit representing sixty seconds

public static final TimeUnit NANOSECONDS

Added in API level 1

Time unit representing one thousandth of a microsecond

public static final TimeUnit SECONDS

Added in API level 1

Time unit representing one second

Public Methods

public long convert (long sourceDuration, TimeUnit sourceUnit)

Added in API level 1

Converts the given time duration in the given unit to this unit. Conversions from finer to coarser granularities truncate, so lose precision. For example, converting 999 milliseconds to seconds results in 0. Conversions from coarser to finer granularities with arguments that would numerically overflow saturate to Long.MIN_VALUE if negative or Long.MAX_VALUE if positive.

For example, to convert 10 minutes to milliseconds, use: TimeUnit.MILLISECONDS.convert(10L, TimeUnit.MINUTES)

Parameters
sourceDuration long: the time duration in the given sourceUnit
sourceUnit TimeUnit: the unit of the sourceDuration argument
Returns
long the converted duration in this unit, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public void sleep (long timeout)

Added in API level 1

Performs a Thread.sleep using this time unit. This is a convenience method that converts time arguments into the form required by the Thread.sleep method.

Parameters
timeout long: the minimum time to sleep. If less than or equal to zero, do not sleep at all.
Throws
InterruptedException if interrupted while sleeping

public void timedJoin (Thread thread, long timeout)

Added in API level 1

Performs a timed Thread.join using this time unit. This is a convenience method that converts time arguments into the form required by the Thread.join method.

Parameters
thread Thread: the thread to wait for
timeout long: the maximum time to wait. If less than or equal to zero, do not wait at all.
Throws
InterruptedException if interrupted while waiting

public void timedWait (Object obj, long timeout)

Added in API level 1

Performs a timed Object.wait using this time unit. This is a convenience method that converts timeout arguments into the form required by the Object.wait method.

For example, you could implement a blocking poll method (see BlockingQueue.poll) using:

 public synchronized Object poll(long timeout, TimeUnit unit)
     throws InterruptedException {
   while (empty) {
     unit.timedWait(this, timeout);
     ...
   
 }}

Parameters
obj Object: the object to wait on
timeout long: the maximum time to wait. If less than or equal to zero, do not wait at all.
Throws
InterruptedException if interrupted while waiting

public long toDays (long duration)

Added in API level 9

Equivalent to DAYS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration

public long toHours (long duration)

Added in API level 9

Equivalent to HOURS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public long toMicros (long duration)

Added in API level 1

Equivalent to MICROSECONDS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public long toMillis (long duration)

Added in API level 1

Equivalent to MILLISECONDS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public long toMinutes (long duration)

Added in API level 9

Equivalent to MINUTES.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public long toNanos (long duration)

Added in API level 1

Equivalent to NANOSECONDS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public long toSeconds (long duration)

Added in API level 1

Equivalent to SECONDS.convert(duration, this).

Parameters
duration long: the duration
Returns
long the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.

public static TimeUnit valueOf (String name)

Added in API level 1

Parameters
name String
Returns
TimeUnit

public static final TimeUnit[] values ()

Added in API level 1

Returns
TimeUnit[]