取得Java虛擬機的啟動時間

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

public class JVMStartTime {
    public static void main(String[] args) {
        // Get JVM's thread system bean
        RuntimeMXBean bean = ManagementFactory.getRuntimeMXBean();

    // Get start time
    long startTime = bean.getStartTime();

    // Get start Date
    Date startDate = new Date(startTime);       

    // print values
    System.out.println("Start Time = " + startTime);
    System.out.println("Start Date = " + startDate);
}

}</pre>