currenttimemillis

For example , retrieving the current time information using System . currentTimeMillis () is rather expensive .

例如，使用System.currentTimeMillis（）检索当前时间信息开销就相当大。

Beyond these issues with currentTimeMillis (), there 's also another concern with using a timer method of any form for monitoring program execution .

除了currentTimeMillis（）的这些问题，还有另一个使用任何类型的计时器方法监视程序执行都会有的问题。

Note the generated attribute on the cart element , which is a timestamp produced by System . currentTimeMillis () .

请注意cart元素的generated属性，它是System.currentTimeMillis（）生成的一个时间戳。

One problem is resolution : System . currentTimeMillis , as its name indicates , returns a result with only nominal millisecond resolution ( see Resources ) .

一个问题是分辨率：System.currentTimeMillis表示返回的结果具有名义上的毫秒级分辨率（参见参考资料）。

As the name implies , nanoTime () returns a time value in nanoseconds , providing a precision a million times greater than the currentTimeMillis () method .

顾名思义，nanoTime（）返回一个以纳秒为单位的时间值，提供了比currentTimeMillis（）方法精确一百万倍的精度。

The randomness of the number is seeded using java . util . Random , which is , in turn , seeded using a value from System . currentTimeMillis () .

数字的随机性使用java.util.Random来搜索，反过来又使用来自System.currentTimeMillis（）的值来寻找。

One issue with currentTimeMillis () is that even though the time value is returned as a count of milliseconds , there are no guarantees about the granularity or accuracy of the count returned .

currentTimeMillis（）的一个问题是，它虽然是以毫秒计数返回时间，但是不能保证返回的计数的粒度或精度。

Where name specifies the API method being requested and utc_milliseconds is the UTC time in milliseconds ( in Java , this is equivalent to the call System . currentTimeMillis ()) .

其中，名称指定了被请求的API方法，而utcmilliseconds是以毫秒为单位的UTC时间（在Java中，这等同于调用System.currentTimeMillis（））。