public UIEventHandler() {
eventBus = new EventBus();
eventBus.register(SimCardReader.getInstance());
eventBus.register(SimCashDispenser.getInstance());
eventBus.register(SimDisplay.getInstance());
eventBus.register(SimEnvelopeAcceptor.getInstance());
eventBus.register(SimKeyboard.getInstance());
eventBus.register(SimOperatorPanel.getInstance());
eventBus.register(SimReceiptPrinter.getInstance());
eventBus.register(BillsPanel.getInstance());
eventBus.register(CardPanel.getInstance());
eventBus.register(LogPanel.getInstance());
eventBus.register(GUI.getInstance());
eventBus.register(ATMPanel.getInstance());
}
/*