initializeUsers();
pendingTaskListModel = new DefaultListModel();
pendingTasksList.setModel(pendingTaskListModel);
client = new HumanTaskClient();
try {
client.start();
} catch (RuntimeException ex) {
Logger.getLogger(ApplicationView.class.getName()).log(Level.SEVERE, null, ex);
JOptionPane.showMessageDialog(null, ex.getMessage(), "Execution Error", JOptionPane.ERROR_MESSAGE);