runStart = new Date();
  private void createNodes() {    ConfigurationWriter configWriter =       experiment.getConfigurationWriter(nodesToRun);    boolean haveRunningNode = false;    for (int i = 0; i < nodesToRun.length; i++) {      NodeComponent nodeComponent = nodesToRun[i];      if (createNode(nodeComponent, nodeComponent.toString(), 		     hostsToRunOn[i],		     configWriter))	haveRunningNode = true;    }    if (!haveRunningNode) {      runButton.setSelected(false);      runButton.setEnabled(true);      unsetTrialValues();      currentTrial--;    }  }