使用Java如何获取进程的ID

package com.test;import java.lang.management.ManagementFactory;import java.lang.management.RuntimeMXBean;public class Target {  public static void main(String[] args) throws InterruptedException {    System.out.println(getProcessID());    while(true) {      Thread.sleep(10000);    }  }  public static final int getProcessID() {     RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();    System.out.println(runtimeMXBean.getName());    return Integer.valueOf(runtimeMXBean.getName().split("@")[0])         .intValue();   } }