Java中的 TimeUnit toMicros() 方法及示例

TimeUnit 类的toMicros()方法用于获取从 1970 年 1 月 1 日午夜 UTC 以来 TimeUnit 对象表示的时间，以 MicroSeconds 的数量表示。

句法：

public long toMicros(long duration)

参数：此方法接受一个强制参数duration ，它是以毫秒为单位的持续时间。

返回值：此方法将转换后的持续时间返回为 MicroSeconds。

下面的程序说明了 TimeUnit toMicros() 方法的实现：

方案一：

Java

// Java program to demonstrate
// toMicros() method of TimeUnit Class
 
import java.util.concurrent.*;
import java.util.Date;
 
class GFG {
    public static void main(String args[])
    {
        // Get current time in milliseconds
        long timeInMilliSec = new Date().getTime();
 
        // Create a TimeUnit object
        TimeUnit time = TimeUnit.MILLISECONDS;
 
        // Convert milliseconds to MicroSeconds
        // using toMicros() method
        System.out.println("Time " + timeInMilliSec
                           + " milliSeconds in MicroSeconds = "
                           + time.toMicros(timeInMilliSec));
    }
}

输出：

Time 1539585538596 milliSeconds in MicroSeconds = 1539585538596000

方案二：

Java

// Java program to demonstrate
// toMicros() method of TimeUnit Class
 
import java.util.concurrent.*;
import java.util.Calendar;
 
class GFG {
    public static void main(String args[])
    {
        // Get current time in milliseconds
        long timeInMilliSec = Calendar
                                  .getInstance()
                                  .getTimeInMillis();
 
        // Create a TimeUnit object
        TimeUnit time = TimeUnit.MILLISECONDS;
 
        // Convert milliseconds to MicroSeconds
        // using toMicros() method
        System.out.println("Time " + timeInMilliSec
                           + " milliSeconds in MicroSeconds = "
                           + time.toMicros(timeInMilliSec));
    }
}

输出：

Time 1539585540908 milliSeconds in MicroSeconds = 1539585540908000