Java並發-ThreadGroup獲取所有線程

一：獲取當前項目所有線程

 

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

  while (currentGroup.getParent()!=null){
      // 返回此線程組的父線程組
      currentGroup=currentGroup.getParent();
  }
  //此線程組中活動線程的估計數
  int noThreads = currentGroup.activeCount();

  Thread[] lstThreads = new Thread[noThreads];
  //把對此線程組中的所有活動子組的引用復制到指定數組中。
  currentGroup.enumerate(lstThreads);

  for (Thread thread : lstThreads) {
      System.out.println("線程數量："+noThreads+" 線程id：" + thread.getId() + " 線程名稱：" + thread.getName() + " 線程狀態：" + thread.getState());
  }
  return lstThreads;
}