JVM: Finding the process id

package com.kk.memory.tool;

import sun.management.VMManagement;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class FindJavaProcessId {

public static void main(String[] args) {

try {
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
Field jvmField = runtimeMXBean.getClass().getDeclaredField("jvm");
jvmField.setAccessible(true);
VMManagement vmManagement = (VMManagement) jvmField.get(runtimeMXBean);
Method getProcessIdMethod = vmManagement.getClass().getDeclaredMethod("getProcessId");
getProcessIdMethod.setAccessible(true);
Integer processId = (Integer) getProcessIdMethod.invoke(vmManagement);
System.out.println("################    ProcessId = " + processId);
} catch (Exception e) {
e.printStackTrace();
}
}

}