Class DateTime (1.42.3)

Version 1.42.3

• 1.45.0 (latest)
• 1.44.2
• 1.43.2
• 1.42.3
• 1.41.8

public final class DateTime implements Serializable

Immutable representation of a date with an optional time and an optional time zone based on RFC 3339.

Implementation is immutable and therefore thread-safe.

Inheritance

Object > DateTime

Implements

Serializable

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

parseRfc3339(String str)

public static DateTime parseRfc3339(String str)

Parses an RFC3339 date/time value.

Upgrade warning: in prior version 1.17, this method required milliseconds to be exactly 3 digits (if included), and did not throw an exception for all types of invalid input values, but starting in version 1.18, the parsing done by this method has become more strict to enforce that only valid RFC3339 strings are entered, and if not, it throws a NumberFormatException. Also, in accordance with the RFC3339 standard, any number of milliseconds digits is now allowed.

Any time information beyond millisecond precision is truncated.

For the date-only case, the time zone is ignored and the hourOfDay, minute, second, and millisecond parameters are set to zero.

Parameter

Name	Description
str	String Date/time string in RFC3339 format

Returns

Type	Description
DateTime

parseRfc3339ToSecondsAndNanos(String str)

public static DateTime.SecondsAndNanos parseRfc3339ToSecondsAndNanos(String str)

Parses an RFC3339 timestamp to a pair of seconds and nanoseconds since Unix Epoch.

Parameter

Name	Description
str	String Date/time string in RFC3339 format

Returns

Type	Description
DateTime.SecondsAndNanos

Constructors

DateTime(boolean dateOnly, long value, Integer tzShift)

public DateTime(boolean dateOnly, long value, Integer tzShift)

Instantiates DateTime, which may represent a date-only value, from the number of milliseconds since the Unix epoch, and a shift from UTC in minutes.

Parameters

Name	Description
dateOnly	boolean specifies if this should represent a date-only value
value	long number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 GMT)
tzShift	Integer time zone, represented by the number of minutes off of UTC, or null for TimeZone.getDefault().

DateTime(String value)

public DateTime(String value)

Instantiates DateTime from an RFC 3339 date/time value.

Upgrade warning: in prior version 1.17, this method required milliseconds to be exactly 3 digits (if included), and did not throw an exception for all types of invalid input values, but starting in version 1.18, the parsing done by this method has become more strict to enforce that only valid RFC3339 strings are entered, and if not, it throws a NumberFormatException. Also, in accordance with the RFC3339 standard, any number of milliseconds digits is now allowed.

Parameter

Name	Description
value	String an RFC 3339 date/time value.

DateTime(Date value)

public DateTime(Date value)

Instantiates DateTime from a Date.

The time zone is interpreted as TimeZone.getDefault(), which may vary with implementation.

Parameter

Name	Description
value	Date date and time

DateTime(Date date, TimeZone zone)

public DateTime(Date date, TimeZone zone)

Instantiates DateTime from a Date and TimeZone.

Parameters

Name	Description
date	Date date and time
zone	TimeZone time zone; if null, it is interpreted as TimeZone.getDefault().

DateTime(long value)

public DateTime(long value)

Instantiates DateTime from the number of milliseconds since the Unix epoch.

The time zone is interpreted as TimeZone.getDefault(), which may vary with implementation.

Parameter

Name	Description
value	long number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 GMT)

DateTime(long value, int tzShift)

public DateTime(long value, int tzShift)

Instantiates DateTime from the number of milliseconds since the Unix epoch, and a shift from UTC in minutes.

Parameters

Name	Description
value	long number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 GMT)
tzShift	int time zone, represented by the number of minutes off of UTC.

Methods

equals(Object o)

public boolean equals(Object o)

A check is added that the time zone is the same. If you ONLY want to check equality of time value, check equality on the #getValue().

Parameter

Name	Description
o	Object

Returns

Type	Description
boolean

Overrides

Object.equals(Object)

getTimeZoneShift()

public int getTimeZoneShift()

Returns the time zone shift from UTC in minutes or 0 for date-only value.

Returns

Type	Description
int

getValue()

public long getValue()

Returns the date/time value expressed as the number of milliseconds since the Unix epoch.

If the time zone is specified, this value is normalized to UTC, so to format this date/time value, the time zone shift has to be applied.

Returns

Type	Description
long

hashCode()

public int hashCode()

Returns

Type	Description
int

Overrides

Object.hashCode()

isDateOnly()

public boolean isDateOnly()

Returns whether this is a date-only value.

Returns

Type	Description
boolean

toString()

public String toString()

Returns

Type	Description
String

Overrides

Object.toString()

toStringRfc3339()

public String toStringRfc3339()

Formats the value as an RFC 3339 date/time string.

Returns

Type	Description
String