System.currentTimeMillis（）何时溢出？ [英] When will System.currentTimeMillis() overflow?

问题描述

我有一个网络应用程序，使用时间戳来订购内容，这只是一个很长的时间。我的网络应用程序后端碰巧是用java编写的，所以我正在使用：

  long timestamp = System.currentTimeMillis（）; 
  

哪一年（大约）会失败？我的意思是在某种程度上，长期的范围会溢出，对吧？我们都可能早已死，但我只是好奇。它会再次像y2k一样吗？我该怎么做才能做好准备？荒谬，我知道，只是好奇！

谢谢

解决方案

它将溢出

  System.out.println（新日期（Long.MAX_VALUE））; 
  

打印

  Sun Aug 17 03:12:55 GMT-04：00 292278994 
  

因此在经过了超过2.92亿年之后。我会说，同时发明解决方案的时间非常充足。说实话，我不指望人类能够幸存下来。与以小时为单位的

I have a web app which orders stuff using a timestamp, which is just a long. My web app backend happens to be written in java, so I am using:

long timestamp = System.currentTimeMillis();

what year (approximately) will this fail? I mean at some point, the range of a long is going to overflow, right? We may all be long-dead, but I'm just curious. Will it be like y2k all over again? What can I do to prepare for this? Ridiculous, I know, just curious!

Thanks

解决方案

It will overflow at

System.out.println(new Date(Long.MAX_VALUE));

which prints

Sun Aug 17 03:12:55 GMT-04:00 292278994

That's thus after a bit more than 292 million years. I'd say, there's a plenty of time to invent a solution in the meanwhile. To be honest, I don't expect the humanhood to survive this. We exist only a few seconds as compared to the age of the world in hour scale and it won't take long.

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