Java获取当前所在进程的PID

package jtest;

02	import java.lang.management.ManagementFactory;

03	import java.lang.management.RuntimeMXBean;

04	import javax.management.MBeanServer;

05	import javax.management.ObjectName;

06

/**

07	* 不同平台和版本下，Mbeans名字不一样。本例为win32+jdk 7_b07

08	* Author:源自网络

09	* Date:2012-12-9 下午7:18:29

10

*/

11	public class MBeanAccess {

12	public static void main(String[] args) throws Exception {

13

//打印GC次数

14	MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();

15	ObjectName youngMBean = newObjectName("java.lang:type=GarbageCollector,name=MarkSweepCompact");

16	ObjectName tenuredMBean = newObjectName("java.lang:type=GarbageCollector,name=Copy");

17	System.out.println("YGC:" + mbs.getAttribute(youngMBean,"CollectionCount"));

18	System.out.println("FGC:" + mbs.getAttribute(tenuredMBean,"CollectionCount"));

19	System.gc();

20	System.out.println("YGC:" + mbs.getAttribute(youngMBean,"CollectionCount"));

21	System.out.println("FGC:" + mbs.getAttribute(tenuredMBean,"CollectionCount"));

22	int pid = getPid();

23	System.out.println("pid: " + pid);

24	//System.in.read(); // block the program so that we can do some probing on it

25

}

26

27	private static int getPid() {

28	//获取进程的PID

29	RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();

30	String name = runtime.getName(); // format: "pid@hostname"

31

try {

32	return Integer.parseInt(name.substring(0, name.indexOf('@')));

33	} catch (Exception e) {

34	return -1;

35

}

36

}

37

}