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(zhuǎn)換為納秒數(shù)。

• 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(tài)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(huì)收到錯(cuò)誤消息。

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

  將此Duration轉(zhuǎn)換為納秒時(shí)， toNanos()方法不會(huì)引發(fā)異常。

Syntax:

句法：

public long toNanos();

Parameter(s):

參數(shù)：

• 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(shù)。

Example:

例：

// Java program to demonstrate the example // of long toNanos() method of Durationimport java.time.*;public class ToNanosOfDuration {public static void main(String args[]) {// Instantiates two Duration objectsDuration du1 = Duration.ofSeconds(1);Duration du2 = Duration.parse("P0DT0H1M");// Display du1 and du2System.out.println("du1: " + du1);System.out.println("du2: " + du2);// represents this Duration du1 in seconds into// number of nanosecondslong to_nanos = du1.toNanos();// Display to_nanosSystem.out.println("du1.toNanos(): " + to_nanos);// represents this Duration du2 in minutes into// number of nanosecondsto_nanos = du2.toNanos();// Display to_nanosSystem.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

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