Java Virtual Machine'nin Başladığı Zamanı Nasıl Alabilirim?

package test.example.lang.management;

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

public class GetStartTime {
    public static void main(String[] args) {
        RuntimeMXBean bean = ManagementFactory.getRuntimeMXBean();
long startTime = bean.getStartTime();
Date startDate = new Date(startTime);
System.out.println("Start Time = " + startTime);
System.out.println("Start Date = " + startDate);
}
}