java threads

which are the two threads always running in java ?

I give up.
Is it the white one and the black one?

Here's some code that will come in handy if you want to investigate what threads are active at any given time.
private void getThreadInfo (PrintWriter output) { // Get the top level thread group ThreadGroup adam = getAdam(Thread.currentThread().getThreadGroup()); // Get the count of active threads in the system int num = adam.activeCount(); // Get all of the active threads in the system Thread list[] = new Thread[num]; int x = adam.enumerate(list); // if (x != num) //return; // Display all of the active threads in the system output.println("<p><b>Threads</b><table border=1><tr>"); output.println("<th>Group</th><th>Name</th><th>Priority</th><th>Daemon</th><th>Alive</th></tr>"); for (int i = 0; i < x; i++) { if (list[i] == null) continue; String threadName = list[i].getName(); String groupName = list[i].getThreadGroup().getName(); output.println("<tr><td>" + groupName + "</td><td>" + threadName + "</td><td>" + list[i].getPriority() + "</td><td>" + (list[i].isDaemon() ? "Yes" : "No") + "</td><td>" + (list[i].isAlive() ? "Yes" : "No") + "</td></tr>"); } output.println("</table>"); } // Recursively calls itself to find the top level thread group private ThreadGroup getAdam (ThreadGroup tg) { ThreadGroup parent = tg.getParent(); if (parent == null) return tg; return getAdam(parent); }

Alternatively, take a thread dump(CTRL-Break(Win systems) or CTRL-/(Unix)) and find it for yourself how many threads are alive and they are in what states!!