自JVM启动以来的时间 [英] time since JVM started

问题描述

有没有办法找出自JVM启动以来的时间？

Is there a way to find out the time since the JVM started?

当然，除了在 main ，因为在我的场景中我正在编写库代码，并且要求在启动后立即调用某些东西是太麻烦。

Of course, other than starting a timer somewhere near the beginning of main, because in my scenario I am writing library code and the requirement that something be called immediately after startup is a too burdensome.

推荐答案

使用此代码段：

long jvmUpTime = ManagementFactory.getRuntimeMXBean().getUptime();

或：

long jvmStartTime = ManagementFactory.getRuntimeMXBean().getStartTime();

这是检索JVM正常运行时间的正确方式。

This is the correct way of retrieving JVM up-time.

有关详细信息，请参阅 http://java.sun.com/j2se/1.5.0/docs/api/java/lang/management/RuntimeMXBean.html

For more info see http://java.sun.com/j2se/1.5.0/docs/api/java/lang/management/RuntimeMXBean.html

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