Java Duration toNanos()方法及示例

java.time包中Duration类的toNanos()方法是用来获取该持续时间的纳秒数的。

语法。

public long toNanos()

参数。此方法不接受任何参数。

返回值。该方法返回一个长值，即该持续时间中的纳秒数。

下面的例子说明了Duration.toNanos()方法。

例1:

// Java code to illustrate toNanos() 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 toNanos() method
        System.out.println(duration.toNanos());
    }
}

输出:

Duration: PT51H4M
183840000000000

例2:

// Java code to illustrate toNanos() 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 toNanos() method
        System.out.println(duration.toNanos());
    }
}

输出: