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;
}