private void threadStarted() { JMeterContextService.incrNumberOfThreads(); threadGroup.incrNumberOfThreads(); GuiPackage gp =GuiPackage.getInstance(); if (gp != null) {// check there is a GUI gp.getMainFrame().updateCounts(); } ThreadListenerTraverser startup = new ThreadListenerTraverser(true); testTree.traverse(startup); // call ThreadListener.threadStarted() }