在Java中单调增加时间？ [英] Monotonically increasing time in Java?

问题描述

在Java应用程序中，我希望能够在操作开始时获取时间戳，并能够定期检查操作运行的时间。问题是：我不希望受到网络时间协议的影响，或者管理员改变时间，或任何可以突然调整时间的东西。我想要一个单调增加的时间价值。我相信这会排除java.util.Date，Time和Calendar。

In a Java application I want to be able to take a timestamp at the start of an operation and be able to periodically check how long the operation has been running. The catch is: I do not want to be impacted by the Network Time Protocol moving the clock around, or the admin changing the time, or anything which can abruptly adjust the time of day. I want a monotonically increasing time value. I believe this rules out java.util.Date, Time, and Calendar.

JRE中是否存在单调递增时间戳的来源？

Is there some source of a monotonically increasing timestamp in the JRE?

推荐答案

您是否考虑过使用 System.nanoTime（）？

它只对计算经过的时间有意义两个事件之间。由于文档声明它与任何系统或墙壁时间无关，我相信它可以用于你的坐垫。

It is only meaningful in working out elapsed time between two events. Since the documentation states that it is not related to any system or wall time I believe it could be used in your sitatuion.

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