public ArrayList<Transaction> listTransaction(Date start, Date end) throws AppException {
ArrayList<Transaction> dataObjectSet = null;
TransactionManager dataObjectManager = new TransactionManager();
try {
dataObjectSet = dataObjectManager.GetTransactions(start, end);
} catch (DataAccessException ex) {
Logger.getLogger(AppController.class.getName()).log(Level.SEVERE, ex.getMessage(), ex);
} catch (IOException ex) {
Logger.getLogger(AppController.class.getName()).log(Level.SEVERE, ex.getMessage(), ex);
}