Get application uptime

Question

I\'ve written an application in java and I want to add a feature to report the uptime of the application. Is there a Class/method in the JVM that can do this?

Should

Answer 1

The result is in milliseconds:

RuntimeMXBean mxBean = ManagementFactory.getRuntimeMXBean();
System.out.println(mxBean.getUptime());

See: ManagementFactory.getRuntimeMXBean() javadoc.