(초보)스윙을이용한 GUI창 키오스크처럼 만들었는데 실시간으로 선택한 메뉴개수를 확인하고싶습니다.

Question

작성내용은 아래와 같습니다.메뉴를 클릭하면 해당메뉴의 이름과 가격이 각 ArrayList에 저장되고최종적으로 주문을 누르기전 현재까지 선택한 개수를 실시간으로 확인하고싶어서textarea에 ArrayList의 size를 넣어봤는데 실시간으로 반영이안되어서 혹시 방법이 없을까 여쭤보기위해 질문을 남깁니다.읽어주셔서 감사드리며,제가 해당사이트에 질문을 처음 올려보는지라.. 본문에 대한답변 외에도 질문하는 방식이나 양식에 대한 피드백이있으실경우에도 답변해주시면 너무 감사할것같습니다.import java.awt.Color; import java.awt.EventQueue; import java.awt.Font; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.ArrayList; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.SwingConstants; import javax.swing.border.EmptyBorder; import javax.swing.JTextArea; import javax.swing.JEditorPane; import javax.swing.AbstractListModel; import javax.swing.ListSelectionModel; import javax.swing.event.ListSelectionListener; import org.w3c.dom.html.HTMLIsIndexElement; import javax.swing.event.ListSelectionEvent; import javax.swing.JTextField; import javax.swing.event.CaretListener; import javax.swing.event.CaretEvent; public class Burger extends JFrame { private JPanel contentPane; ArrayList orderList = new ArrayList(); ArrayList priceList = new ArrayList(); int sum=0; String res = ""; JList list; JTextArea txtrD; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { Burger frame = new Burger(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public Burger() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 715, 705); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); JLabel lblNewLabel = new JLabel("** \uAD7F\uBC84\uAC70 \uD584\uBC84\uAC70 \uC785\uB2C8\uB2E4 **"); lblNewLabel.setFont(new Font("굴림", Font.BOLD, 18)); lblNewLabel.setBounds(56, 24, 223, 35); contentPane.add(lblNewLabel); JLabel lblNewLabel_1 = new JLabel("\uB4DC\uC2E4 \uBA54\uB274\uB97C \uC120\uD0DD\uD558\uC138\uC694"); lblNewLabel_1.setHorizontalAlignment(SwingConstants.CENTER); lblNewLabel_1.setFont(new Font("굴림", Font.BOLD, 18)); lblNewLabel_1.setBounds(376, 24, 223, 35); contentPane.add(lblNewLabel_1); JButton btnHotBurger = new JButton("\uB9E4\uC6B4 \uC18C\uC2A4 \uD584\uBC84\uAC70 : 4500"); btnHotBurger.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { orderList.add("매운 소스 햄버거"); priceList.add(4500); } }); btnHotBurger.setBounds(75, 127, 193, 35); contentPane.add(btnHotBurger); JButton btnShrimpBurger = new JButton("\uC57C\uCC44 \uC0C8\uC6B0 \uD584\uBC84\uAC70 : 4500"); btnShrimpBurger.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { orderList.add("야채 새우 햄버거"); priceList.add(4500); } }); btnShrimpBurger.setBounds(75, 286, 193, 35); contentPane.add(btnShrimpBurger); JButton btnBeefBurger = new JButton("\uB354\uBE14 \uBE44\uD504 \uD584\uBC84\uAC70 : 7000"); btnBeefBurger.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { orderList.add("더블 비프 햄버거"); priceList.add(7000); } }); btnBeefBurger.setBounds(394, 127, 193, 35); contentPane.add(btnBeefBurger); JButton btnTomatoBurger = new JButton("\uC138\uACB9 \uD1A0\uB9C8\uD1A0 \uD584\uBC84\uAC70 : 5500"); btnTomatoBurger.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { orderList.add("세겹 토마토 햄버거"); priceList.add(5500); } }); btnTomatoBurger.setBounds(394, 286, 193, 35); contentPane.add(btnTomatoBurger); JButton btnOrder = new JButton("\uC8FC\uBB38\uD569\uB2C8\uB2E4"); btnOrder.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { for(int i=0 ; i<=orderList.size()-1;i++ ) { res += String.format("%s : %d ", orderList.get(i), priceList.get(i)); sum+=priceList.get(i); } res += String.format(" 합계 금액 : %d ", sum); // JOptionPane.showMessageDialog(null, res); JOptionPane.showConfirmDialog(btnOrder , res, "주문목록", JOptionPane.YES_NO_OPTION); res=""; sum=0; orderList.clear(); priceList.clear(); list.setEnabled(true); } }); btnOrder.setBackground(Color.ORANGE); btnOrder.setBounds(75, 425, 193, 66); contentPane.add(btnOrder); JButton btnReset = new JButton("\uCDE8\uC18C\uD569\uB2C8\uB2E4"); btnReset.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { JOptionPane.showMessageDialog(btnReset, "취소했습니다."); orderList.clear(); priceList.clear(); list.setEnabled(true); } }); btnReset.setBackground(Color.YELLOW); btnReset.setBounds(394, 425, 193, 66); contentPane.add(btnReset); list = new JList(); list.addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent e) { if(!list.getValueIsAdjusting()) { int index1=list.getSelectedIndex(); String indexElement1 =(String) list.getModel().getElementAt(index1); if(indexElement1.equals("노량진")) { sum-=1000; } list.setEnabled(false); } } }); list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); list.setModel(new AbstractListModel() { String[] values = new String[] {"\uB178\uB7C9\uC9C4", "\uB178\uB7C9\uC9C4 \uC678"}; public int getSize() { return values.length; } public Object getElementAt(int index) { return values[index]; } }); list.setBounds(75, 546, 181, 44); contentPane.add(list); txtrD = new JTextArea(); txtrD.addCaretListener(new CaretListener() { public void caretUpdate(CaretEvent e) { } }); txtrD.setText(String.format("%d개 선택",orderList.size())); txtrD.setBounds(394, 529, 193, 108); contentPane.add(txtrD); } }

(초보)스윙을이용한 GUI창 키오스크처럼 만들었는데 실시간으로 선택한 메뉴개수를 확인하고싶습니다.

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