Listing All Running Threads in a group : Simple Threads « Threads « Java

Listing All Running Threads in a group


public class Main {
  public static void main(String[] argv) throws Exception {
    ThreadGroup group = Thread.currentThread().getThreadGroup().getParent();
    while (group.getParent() != null) {
      group = group.getParent();
    int numThreads = group.activeCount();
    Thread[] threads = new Thread[numThreads * 2];
    numThreads = group.enumerate(threads, false);

    for (int i = 0; i < numThreads; i++) {
      Thread thread = threads[i];

    int numGroups = group.activeGroupCount();
    ThreadGroup[] groups = new ThreadGroup[numGroups * 2];
    numGroups = group.enumerate(groups, false);

    for (int i = 0; i < numGroups; i++) {


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