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Java Duration toNanosPart()用法及代碼示例


java.time包中的Duration Class的toNanosPart()方法用於在持續時間的秒數內獲取納秒部分。

用法:

public long toNanosPart()

參數:此方法不接受任何參數。


返回值:此方法返回一個long值,該值是持續時間(秒)內的納秒部分。

以下示例說明了Duration.toNanosPart()方法:

示例1:

// Java code to illustrate toNanosPart() method 
  
import java.time.Duration; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Duration using parse() method 
        Duration duration 
            = Duration.parse("P2DT3H4M"); 
  
        System.out.println("Duration: "
                           + duration); 
  
        // Get the number of nano-seconds 
        // using toNanosPart() method 
        System.out.println(duration.toNanosPart()); 
    } 
}
輸出:
Duration: PT51H4M
0

示例2:

// Java code to illustrate toNanosPart() method 
  
import java.time.Duration; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Duration using ofNanos() method 
        Duration duration = Duration.ofNanos(10); 
  
        System.out.println("Duration: "
                           + duration); 
  
        // Get the number of nano-seconds 
        // using toNanosPart() method 
        System.out.println(duration.toNanosPart()); 
    } 
}
輸出:
Duration: PT0.00000001S
10

參考: https://docs.oracle.com/javase/9/docs/api/java/time/Duration.html#toNanosPart–



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