Java TimeUnit toMillis()用法及代码示例

自1970年1月1日午夜UTC以来，使用TimeUnit类的toMillis()方法获取TimeUnit对象表示的时间(以秒为单位)。

用法:

public long toMillis(long duration)

参数：此方法接受强制参数持续时间，该持续时间以毫秒为单位。

返回值：此方法将转换后的持续时间返回为秒。

下面的程序演示了TimeUnit toMillis()方法的实现：

示例1:

// Java program to demonstrate 
// toMillis() method of TimeUnit Class 
  
import java.util.concurrent.*; 
import java.util.Date; 
  
class GFG { 
    public static void main(String args[]) 
    { 
        // Get current time in seconds 
        long timeInSec = (new Date().getTime()) / 1000; 
  
        // Create a TimeUnit object 
        TimeUnit time = TimeUnit.SECONDS; 
  
        // Convert seconds to milliSeconds 
        // using toMillis() method 
        System.out.println("Time " + timeInSec 
                           + " Seconds in MilliSeconds = "
                           + time.toMillis(timeInSec)); 
    } 
}

输出：

Time 1539585757 Seconds in MilliSeconds = 1539585757000

示例2:

// Java program to demonstrate 
// toMillis() 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 timeInSec = (Calendar 
                              .getInstance() 
                              .getTimeInMillis()) 
                         / 1000; 
  
        // Create a TimeUnit object 
        TimeUnit time = TimeUnit.SECONDS; 
  
        // Convert seconds to milliSeconds 
        // using toMillis() method 
        System.out.println("Time " + timeInSec 
                           + " Seconds in MilliSeconds = "
                           + time.toMillis(timeInSec)); 
    } 
}

输出：

Time 1539585759 Seconds in MilliSeconds = 1539585759000

相关用法

注：本文由纯净天空筛选整理自RishabhPrabhu大神的英文原创作品 TimeUnit toMillis() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。