private ArrayList<Customer> customers = new ArrayList<>();

    public CustomerUI() {
        $$$setupUI$$$();
        newButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent actionEvent) {
                curCust = bank.createCustomer("", "", "");
                idTextField.setText(curCust.getCustomerID().toString());
                idTextField.setText("");
                firstNameTextField.setText("");
                lastNameTextField.setText("");
                textField1.setText("");
            }
        });
        saveButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent actionEvent) {
                customers.add(new Customer(Integer.parseInt(idTextField.getText()),firstNameTextField.getText(),lastNameTextField.getText(),textField1.getText()));
                bidirectionalIterator++;
                makeThemBlank();
                System.out.println("saved");
            }
        });
         deleteButton.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent actionEvent) {


                     customers.remove(bidirectionalIterator);
                     bidirectionalIterator--;

                     makeThemBlank();
                     System.out.println("deleted");



             }
         });
         prevButton.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent actionEvent) {
                if(bidirectionalIterator-1<0)
                    bidirectionalIterator=1;

                bidirectionalIterator--;

                    idTextField.setText(customers.get(bidirectionalIterator).getCustomerID()+"");
                    firstNameTextField.setText(customers.get(bidirectionalIterator).getFirstName());
                    lastNameTextField.setText(customers.get(bidirectionalIterator).getLastName());
                    textField1.setText(customers.get(bidirectionalIterator).getEmail());

             }
         });
         nextButton.addActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent actionEvent) {
                 if(customers.size()-1<=bidirectionalIterator)
                     return;

                 bidirectionalIterator++;

                 idTextField.setText(customers.get(bidirectionalIterator).getCustomerID()+"");
                 firstNameTextField.setText(customers.get(bidirectionalIterator).getFirstName());
                 lastNameTextField.setText(customers.get(bidirectionalIterator).getLastName());
                 textField1.setText(customers.get(bidirectionalIterator).getEmail());

             }
         });
    }