Java并发-ThreadGroup获取所有线程

一：获取当前项目所有线程

 public Thread[] findAllThread(){
   ThreadGroup currentGroup =Thread.currentThread().getThreadGroup();

   while (currentGroup.getParent()!=null){
       // 返回此线程组的父线程组
       currentGroup=currentGroup.getParent();
   }
   //此线程组中活动线程的估计数
   int noThreads = currentGroup.activeCount();

   Thread[] lstThreads = new Thread[noThreads];
   //把对此线程组中的所有活动子组的引用复制到指定数组中。
   currentGroup.enumerate(lstThreads);

   for (Thread thread : lstThreads) {
       System.out.println("线程数量："+noThreads+" 线程id：" + thread.getId() + " 线程名称：" + thread.getName() + " 线程状态：" + thread.getState());
   }
   return lstThreads;
 }