Java Instant adjustInto()用法及代碼示例

Instant類的AdjustInto(Temporal時間)方法將傳遞的時間對象調整為具有應用此方法的此瞬間。

用法:

public Temporal adjustInto(Temporal temporal)

參數：該方法接受作為要調整的目標時間對象的參數時間。它不能為空。

返回值：此方法返回調整後的時間對象。

異常：此方法引發以下異常：

DateTimeException如果此方法無法進行調整。
ArithmeticException如果調整時發生數字溢出。

以下示例程序旨在說明Instant.adjustInto()方法：

示例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); 
    } 
}

輸出：

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

示例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); 
    } 
}

輸出：

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

示例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); 
    } 
}

輸出：

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

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

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注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 Instant adjustInto() method in Java with Example。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。