Java Instant adjustInto()方法与实例

Instant类的 adjustInto(Temporal temporal) 方法将传递的时间对象调整为具有该方法所适用的瞬间。

语法

public Temporal adjustInto(Temporal temporal)

参数： 该方法接受一个参数 temporal ，它是要调整的目标时间对象。它不应该是空的。

返回值 ：该方法返回调整后的时间对象。

异常： 该方法抛出以下异常。

下面的程序说明了Instant.adjustInto()方法。

程序1 :

// Java program to demonstrate// Instant.adjustInto() method  import java.time.*;import java.time.temporal.Temporal;  public class GFG {      public static void main(String[] args)    {          // create an instance object        Instant instant            = Instant.parse("2018-11-20T16:55:30.00Z");          // create a Temporal object        // which is equal to OffsetDateTime object        OffsetDateTime passTemporal            = OffsetDateTime.now();          // print passed Value        System.out.println("Passed Value: "                           + passTemporal);          // apply adjustInto method        // to adjust OffsetDateTime Temporal        // to instant object        Temporal returnTemporal            = instant.adjustInto(passTemporal);          // print results        System.out.println("Returned Value: "                           + (OffsetDateTime)returnTemporal);    }}

输出:

Passed Value: 2018-11-22T09:22:17.297ZReturned Value: 2018-11-20T16:55:30Z

程序2

// Java program to demonstrate// Instant.adjustInto() method  import java.time.*;import java.time.temporal.Temporal;  public class GFG {    public static void main(String[] args)    {          // create an instance object        Instant instant            = Instant.parse("2018-11-17T06:50:39.00Z");          // create a Temporal object        // which is equal to ZonedDateTime object        ZonedDateTime passTemporal            = ZonedDateTime.now();          // print passed Value        System.out.println("Passed Value: "                           + passTemporal);          // apply adjustInto method        // to adjust ZonedDateTime Temporal        // to instant object        Temporal returnTemporal            = instant.adjustInto(passTemporal);          // print results        System.out.println("Returned Value: "                           + (ZonedDateTime)returnTemporal);    }}

输出:

Passed Value: 2018-11-22T09:22:20.995Z[Etc/UTC]Returned Value: 2018-11-17T06:50:39Z[Etc/UTC]

程序3 。

// Java program to demonstrate// Instant.adjustInto() method  import java.time.*;import java.time.temporal.Temporal;  public class GFG {    public static void main(String[] args)    {          // create an instance object        Instant instant            = Instant.parse("2017-11-01T16:25:00.00Z");          // create a Temporal object        // which is equal to Instant object        // with current Instant        Temporal passTemporal            = Instant.now();          // print passed Value        System.out.println("Passed Value: "                           + passTemporal);          // apply adjustInto method to adjust Temporal        // to this instant object        Temporal returnTemporal            = instant.adjustInto(passTemporal);          // print results        System.out.println("Returned Value: "                           + returnTemporal);    }}

输出:

Passed Value: 2018-11-22T09:22:23.298ZReturned Value: 2017-11-01T16:25:00Z

参考资料: https://docs.oracle.com/javase/10/docs/api/java/time/Instant.html#adjustInto(java.time.temporal.Temporal)。