Java獲取當前所在進程的PID

import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import javax.management.MBeanServer;
import javax.management.ObjectName;
/**


不同平臺和版本下，Mbeans名字不一樣。本例為win32+jdk 7_b07
public class MBeanAccess {
 public static void main(String[] args) throws Exception {

 //打印GC次數
 MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
 ObjectName youngMBean = new ObjectName("java.lang:type=GarbageCollector,name=MarkSweepCompact");
 ObjectName tenuredMBean = new ObjectName("java.lang:type=GarbageCollector,name=Copy");
 System.out.println("YGC:" + mbs.getAttribute(youngMBean, "CollectionCount"));
 System.out.println("FGC:" + mbs.getAttribute(tenuredMBean, "CollectionCount"));
 System.gc();
 System.out.println("YGC:" + mbs.getAttribute(youngMBean, "CollectionCount"));
 System.out.println("FGC:" + mbs.getAttribute(tenuredMBean, "CollectionCount"));
 int pid = getPid();  
 System.out.println("pid: " + pid);  
 //System.in.read(); // block the program so that we can do some probing on it  

}
private static int getPid() {

 //獲取進程的PID
 RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();  
 String name = runtime.getName(); // format: "pid@hostname"  
 try {  
     return Integer.parseInt(name.substring(0, name.indexOf('@')));  
 } catch (Exception e) {  
     return -1;  
 }  

}

}</pre>