得到当前进程的ID

import java.lang.management.ManagementFactory;

/**
 * Utility class to get the current process ID
 */
public class ProcessIDUtil
{
 
    public static void main ( String [] args )
    {
        long currentPID = getCurrentPID ();
        System.out.println ( "Current Process ID is " + currentPID );
    }
 
    /**
     * This method returns the current process ID
     *
     * @return process ID
     */
    public static long getCurrentPID ()
    {
        // The name is normally of the format <PID>@<Machine-Name>. For eg: 1416@htipl-50291
        String name = ManagementFactory.getRuntimeMXBean ().getName ();
        long pid = Long.parseLong ( name.split ( "@" )[0] );
        return pid;
    }
 
}