打印当前java程序的线程堆栈，包括线程状态，名字，监视器 </div>

 

打印当前java程序的线程堆栈    

 ThreadMXBean bean = ManagementFactory.getThreadMXBean();   Map < Thread, StackTraceElement[] > traceMap = Thread.getAllStackTraces();   Set < Thread > allThreads = traceMap.keySet();   for (Thread thread: allThreads) {       StringBuilder msg = new StringBuilder();       long tid = thread.getId();       ThreadInfo threadInfo = bean.getThreadInfo(tid);       if(threadInfo == null){        continue;       }       String lockInfo = threadInfo.getLockName() == null ? " " : ", " + threadInfo.getLockName();       msg.append("thread id: " + tid + ", name: " + threadInfo.getThreadName() + ", " + threadInfo.getThreadState() + lockInfo).append("\n");       StackTraceElement[] stackTraces = thread.getStackTrace();       for (StackTraceElement stackTrace: stackTraces) {           msg.append("\t").append(stackTrace).append("\n");       }       System.out.println(msg);   }