How to Get the Up Time of a JVM Programmatically?

getUptime

long getUptime()

Returns the uptime of the Java virtual machine in milliseconds. 

Returns:

uptime of the Java virtual machine in milliseconds.

Example:

package com.crunchify.tutorials;

/**
 * @author Crunchify.com
 */

import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;

public class CrunchifyGetJVMUpTime {
	public static void main(String[] args) {
		RuntimeMXBean runtimeBean = ManagementFactory.getRuntimeMXBean();

		long upTime = runtimeBean.getUptime();
		System.out.printf("Up Time = %d (ms)", upTime);
	}
}

Output:

Up Time = 28 (ms)