duration java

Duration Class toNanos()方法 (Duration Class toNanos() method)

• toNanos() method is available in java.time package.

  toNanos()方法在java.time包中可用。

• toNanos() method is used to convert this Duration into the number of nanoseconds.

  toNanos()方法用于將此Duration轉換為納秒數。

• toNanos() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  toNanos()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• toNanos() method does not throw an exception at the time of converting this Duration to nanoseconds.

  將此Duration轉換為納秒時， toNanos()方法不會引發異常。

Syntax:

句法：

    public long toNanos();

Parameter(s):

參數：

• None

  沒有

Return value:

返回值：

The return type of this method is long, it returns the number of nanoseconds exists in this Duration.

此方法的返回類型為long ，它返回此Duration中存在的納秒數。

Example:

例：

// Java program to demonstrate the example 
// of long toNanos() method of Duration
import java.time.*;
public class ToNanosOfDuration {
public static void main(String args[]) {
// Instantiates two Duration objects
Duration du1 = Duration.ofSeconds(1);
Duration du2 = Duration.parse("P0DT0H1M");
// Display du1 and du2
System.out.println("du1: " + du1);
System.out.println("du2: " + du2);
// represents this Duration du1 in seconds into
// number of nanoseconds
long to_nanos = du1.toNanos();
// Display to_nanos
System.out.println("du1.toNanos(): " + to_nanos);
// represents this Duration du2 in minutes into
// number of nanoseconds
to_nanos = du2.toNanos();
// Display to_nanos
System.out.println("du2.toNanos(): " + to_nanos);
}
}

Output

輸出量

du1: PT1S
du2: PT1M
du1.toNanos(): 1000000000
du2.toNanos(): 60000000000

翻譯自: https://www.includehelp.com/java/duration-tonanos-method-with-example.aspx

duration java