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java.time.Instant Class

Introduction

java.time.Instant 类对时间线上的单个瞬时点进行建模。

The java.time.Instant class models a single instantaneous point on the time-line.

Class declaration

以下是 java.time.Instant 类的声明 −

Following is the declaration for java.time.Instant class −

public final class Instant
   extends Object
      implements Temporal, TemporalAdjuster, Comparable, Serializable

Field

Following are the fields for Java.time.Instant class −
static Instant EPOCH − Constant for the 1970-01-01T00:00:00Z epoch instant.
static Instant MAX − The maximum supported Instant, '1000000000-12-31T23:59:59.999999999Z'.
static Instant MIN − The minimum supported Instant, '-1000000000-01-01T00:00Z'.

Class methods

Sr.No.	Method & Description
1	Temporal adjustInto(Temporal temporal)Adjusts the specified temporal object to have this instant.
2	OffsetDateTime atOffset(ZoneOffset offset)Combines this instant with an offset to create an OffsetDateTime.
3	ZonedDateTime atZone(ZoneId zone)Combines this instant with a time-zone to create a ZonedDateTime.
4	int compareTo(Instant otherInstant)Compares this instant to the specified instant.
5	boolean equals(Object otherInstant)Checks if this instant is equal to the specified instant.
6	static Instant from(TemporalAccessor temporal)Obtains an instance of Instant from a temporal object.
7	int get(TemporalField field)Gets the value of the specified field from this instant as an int.
8	long getEpochSecond()Gets the number of seconds from the Java epoch of 1970-01-01T00:00:00Z.
9	long getLong(TemporalField field)Gets the value of the specified field from this instant as a long.
10	int getNano()Gets the number of nanoseconds, later along the time-line, from the start of the second.
11	int hashCode()Returns a hash code for this instant.
12	boolean isAfter(Instant otherInstant)Checks if this instant is after the specified instant.
13	boolean isBefore(Instant otherInstant)Checks if this instant is before the specified instant.
14	boolean isSupported(TemporalField field)Checks if the specified field is supported.
15	boolean isSupported(TemporalUnit unit)Checks if the specified unit is supported.
16	Instant minus(long amountToSubtract, TemporalUnit unit)Returns a copy of this instant with the specified amount subtracted.
17	Instant minus(TemporalAmount amountToSubtract)Returns a copy of this instant with the specified amount subtracted.
18	Instant minusMillis(long millisToSubtract)Returns a copy of this instant with the specified duration in milliseconds subtracted.
19	Instant minusNanos(long nanosToSubtract)Returns a copy of this instant with the specified duration in nanoseconds subtracted.
20	Instant minusSeconds(long secondsToSubtract)Returns a copy of this instant with the specified duration in seconds subtracted.
21	static Instant now()Obtains the current instant from the system clock.
22	static Instant now(Clock clock)Obtains the current instant from the specified clock.
23	static Instant ofEpochMilli(long epochMilli)Obtains an instance of Instant using milliseconds from the epoch of 1970-01-01T00:00:00Z.
24	static Instant ofEpochSecond(long epochSecond)Obtains an instance of Instant using seconds from the epoch of 1970-01-01T00:00:00Z.
25	static Instant ofEpochSecond(long epochSecond, long nanoAdjustment)Obtains an instance of Instant using seconds from the epoch of 1970-01-01T00:00:00Z and nanosecond fraction of second.
26	static Instant parse(CharSequence text)Obtains an instance of Instant from a text string such as 2007-12-03T10:15:30.00Z.
27	Instant plus(long amountToAdd, TemporalUnit unit)Returns a copy of this instant with the specified amount added.
28	Instant plus(TemporalAmount amountToAdd)Returns a copy of this instant with the specified amount added.
29	Instant plusMillis(long millisToAdd)Returns a copy of this instant with the specified duration in milliseconds added.
30	Instant plusNanos(long nanosToAdd)Returns a copy of this instant with the specified duration in nanoseconds added.
31	Instant plusSeconds(long secondsToAdd)Returns a copy of this instant with the specified duration in seconds added.
32	R query(TemporalQuery query)Queries this instant using the specified query.
33	ValueRange range(TemporalField field)Gets the range of valid values for the specified field.
34	long toEpochMilli()Converts this instant to the number of milliseconds from the epoch of 1970-01-01T00:00:00Z.
35	String toString()A string representation of this instant using ISO-8601 representation.
36	Instant truncatedTo(TemporalUnit unit)Returns a copy of this Instant truncated to the specified unit.
37	long until(Temporal endExclusive, TemporalUnit unit)Calculates the amount of time until another instant in terms of the specified unit.
38	Instant with(TemporalAdjuster adjuster)Returns an adjusted copy of this instant.
39	Instant with(TemporalField field, long newValue)Returns a copy of this instant with the specified field set to a new value.

Methods inherited

此类从以下类中继承方法：

This class inherits methods from the following classes −

Java.lang.Object