Java 获取当前所有的线程

2015-11-13· 2312 次浏览
```java ThreadGroup group = Thread.currentThread().getThreadGroup(); ThreadGroup topGroup = group; // 遍历线程组树,获取根线程组 while (group != null) {     topGroup = group;     group = group.getParent(); } // 激活的线程数加倍 int estimatedSize = topGroup.activeCount() * 2; Thread[] slackList = new Thread[estimatedSize]; // 获取根线程组的所有线程 int actualSize = topGroup.enumerate(slackList); // copy into a list that is the exact size Thread[] list = new Thread[actualSize]; System.arraycopy(slackList, 0, list, 0, actualSize); System.out.println("Thread list size == " + list.length); for (Thread thread : list) {     System.out.println(thread.getName()); } ```