Java Duration toMillisPart() 方法及示例

java.time包中Duration类的toMillisPart()方法是通过用纳秒数除以1,000,000来获取该持续时间的毫秒数。

语法。

public long toMillisPart()

参数。此方法不接受任何参数。

返回值。该方法返回一个长值，即用纳秒数除以1,000,000得出的该持续时间的毫秒数。

下面的例子说明了Duration.toMillisPart()方法。

例1:

// Java code to illustrate toMillisPart() 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 milli-seconds
        // using toMillisPart() method
        System.out.println(duration.toMillisPart());
    }
}

输出:

Duration: PT51H4M
0

例2:

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

输出: