Class TimeSource.SystemTimeSource

java.lang.Object

javax.time.TimeSource

javax.time.TimeSource.SystemTimeSource

All Implemented Interfaces:

Serializable

Enclosing class:

TimeSource

static final class TimeSource.SystemTimeSource
extends TimeSource
implements Serializable

Implementation of a time-source that always returns the latest time from System.currentTimeMillis().

Nested Class Summary

Nested classes/interfaces inherited from class TimeSource

TimeSource.FixedTimeSource, TimeSource.OffsetSystemTimeSource, TimeSource.SystemTimeSource

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final TimeSource.SystemTimeSource	INSTANCE	Singleton instance.
private static final long	serialVersionUID	A serialization identifier for this class.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SystemTimeSource()	Restricted constructor.

Method Summary

Modifier and Type	Method	Description
Instant	instant()	Gets the current Instant.
long	millis()	Gets the current millisecond instant.
private Object	readResolve()	Resolve singletons.
String	toString()

Methods inherited from class TimeSource

fixed, offsetSystem, system, taiInstant, utcInstant

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

INSTANCE

static final TimeSource.SystemTimeSource INSTANCE

Singleton instance.

serialVersionUID

private static final long serialVersionUID

A serialization identifier for this class.

See Also:

• Constant Field Values

Constructor Details

SystemTimeSource

private SystemTimeSource()

Restricted constructor.

Method Details

readResolve

private Object readResolve()

Resolve singletons.

instant

public Instant instant()

Gets the current Instant.

The instant returned by this method will vary according to the implementation. For example, the time-source returned by TimeSource.system() will return an instant based on System.currentTimeMillis().

Normally, this method will not throw an exception. However, one possible implementation would be to obtain the time from a central time server across the network. Obviously, in this case the lookup could fail, and so the method is permitted to throw an exception.

Specified by:

instant in class TimeSource

Returns:

the current Instant from this time-source, never null

millis

public long millis()

Gets the current millisecond instant.

The instant returned by this method will vary according to the implementation. For example, the time-source returned by TimeSource.system() will return System.currentTimeMillis().

This method is provided for backwards compatibility. New code should use classes such as Instant to represent an instant rather than a raw millisecond value.

Normally, this method will not throw an exception. However, one possible implementation would be to obtain the time from a central time server across the network. Obviously, in this case the lookup could fail, and so the method is permitted to throw an exception.

Overrides:

millis in class TimeSource

Returns:

the current millisecond instant from this time-source, measured from the Java epoch of 1970-01-01T00:00 UTC, never null

toString

public String toString()

Overrides:

toString in class Object