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I get the error DelegatingMetho dAccessor when i run this code from AlphaApp

18 New Member
atsun.reflect.D elegatingMethod AccessorImpl.in voke(Delegating MethodAccessorI mpl.java:43)
at java.lang.refle ct.Method.invok e(Method.java:4 97)
at bluej.runtime.E xecServer$3.run (ExecServer.jav a:730)

MainMenu
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  1. import java.awt.*;
  2. import java.io.*;
  3. import java.util.*;
  4. import java.net.*;
  5. import javax.swing.*;
  6. import java.awt.event.*;
  7. import java.awt.FlowLayout.*;
  8.  
  9. public class MainMenu extends JPanel
  10. {
  11.    static JLabel title, advert;
  12.    static JButton addBooks, addSoftware, addProduct, viewCart, makeOrder;
  13.    static JPanel manuPanel; 
  14.    static CardLayout cardLayout; 
  15.    static FlowLayout flowLayout;
  16.  
  17.  
  18.    static public ArrayList<Order> orderHistory = new ArrayList<Order>();
  19.    static public ArrayList<Book> bookList = new ArrayList<Book>();
  20.    static public ArrayList<Cart> cart = new ArrayList<Cart>();
  21.    static public ArrayList<Software> softwareList = new ArrayList<Software>();
  22.  
  23.    @SuppressWarnings("unchecked") //  gets rid of the unchecked or unsafe warning
  24.    public MainMenu(){                    
  25.        final String dir = System.getProperty("user.dir");
  26.        Color Gray = new Color(1,1,1); 
  27.        Color titleColor = new Color(1,1,1);
  28.  
  29.        setLayout(new FlowLayout());       
  30.        manuPanel = new JPanel(new FlowLayout());
  31.  
  32.        addBooks = new JButton("ADD BOOKS");
  33.        addBooks.setLocation (30,450);//(30,450);
  34.        addBooks.setSize(80,40);
  35.         add(addBooks);
  36.  
  37.        addSoftware = new JButton("ADD SOFTWARE");
  38.        addSoftware.setLocation(30,451);
  39.        addSoftware.setSize(80,40);
  40.         add(addSoftware);       
  41.  
  42.        makeOrder = new JButton("MAKE ORDER");
  43.        makeOrder.setLocation(30,452);
  44.        makeOrder.setSize(80,40);
  45.         add(makeOrder);
  46.  
  47.        viewCart = new JButton("VIEW CART");
  48.        viewCart.setLocation(30,453);
  49.        viewCart.setSize(80,40);
  50.         add(viewCart);
  51.  
  52.          addBooks.addActionListener(new ActionListener()
  53.          {
  54.             public void actionPerformed(ActionEvent evt)
  55.             {
  56.                 Product bookID = new Product();       //int productID = bookID.getproductID();          
  57.                AlphaApp.cardLayout.show(AlphaApp.cards, "Add Books");
  58.             }
  59.         });
  60.  
  61.         addSoftware.addActionListener(new ActionListener()
  62.         {
  63.             public void actionPerformed(ActionEvent evt)
  64.             {
  65.  
  66.               AlphaApp.cardLayout.show(AlphaApp.cards, "Add Softwares");
  67.             }
  68.         });
  69.  
  70.  
  71.         makeOrder.addActionListener(new ActionListener()
  72.         {
  73.             public void actionPerformed(ActionEvent evt)
  74.             {  
  75.                 AlphaApp.window.setSize(1200,800);
  76.                 AlphaApp.window.setResizable(false);
  77.                 AlphaApp.window.setLocationRelativeTo(null);  
  78.                 AlphaApp.makeOrderCard.book.setSelected(true);
  79.                 AlphaApp.makeOrderCard.updateBookTable();
  80.                 AlphaApp.cardLayout.show(AlphaApp.cards, "Make Order");              
  81.             }
  82.         });
  83.  
  84.         viewCart.addActionListener(new ActionListener()
  85.         {
  86.             public void actionPerformed(ActionEvent evt)
  87.             {
  88.         boolean emptyRow = AlphaApp.viewCartCard.historyTable.getSelectedRowCount() > 0;
  89.         if(!emptyRow){
  90.            AlphaApp.viewCartCard.populateHistoryTable();               
  91.         }else{
  92.             JOptionPane.showMessageDialog(null, "MAKE AN ORDER!", "Information", JOptionPane.WARNING_MESSAGE);
  93.         }
  94.                 AlphaApp.window.setSize(1000,600);
  95.                 AlphaApp.window.setLocationRelativeTo(null);     
  96.                 //AlphaApp.viewCartCard.updateCartTable();
  97.                 //AlphaApp.viewCartCard.updateOrderTable();       
  98.                 //AlphaApp.viewCartCard.populateHistoryTable(); 
  99.                 AlphaApp.cardLayout.show(AlphaApp.cards, "View Cart");              
  100.             }
  101.         });
  102.  
  103.  
  104.  
  105.         add(manuPanel);
  106.         manuPanel.add(addBooks, "split 2, gapTop 130, gapRight 65"); 
  107.         manuPanel.add(addSoftware, "gapTop 130, wrap");     
  108.         manuPanel.add(makeOrder, "split 2, gapTop 50, gapRight 60");   
  109.         manuPanel.add(viewCart, " sg a, wrap, gapTop 50");     
  110.  
  111.  
  112. }
  113.  
AlphaApp
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  1. import java.awt.*;
  2. import javax.swing.*;
  3.  
  4. public class AlphaApp extends JFrame
  5. {
  6.     static JFrame window;    
  7.     static public CardLayout cardLayout;    
  8.     static public JPanel cards;  
  9.  
  10.     MainMenu menu = new MainMenu();
  11.  
  12.     static public AddBooks addBooks = new AddBooks();
  13.     static public AddSoftware addSoftwares = new AddSoftware();
  14.     static public MakeOrder makeOrderCard = new MakeOrder();
  15.     static public ViewCart viewCartCard = new ViewCart();
  16.  
  17.  
  18.     public static void main(String [] args){
  19.         try {  
  20.                 UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
  21.  
  22.             }  
  23.             catch (Exception ex1){}
  24.  
  25.        AlphaApp app = new AlphaApp();   
  26.     }
  27.  
  28.     public AlphaApp(){        
  29.         window = new JFrame("");
  30.         window.setSize(800,600);
  31.         window.setLocationRelativeTo(null);    // trying to center the window
  32.         //window.setMinimumSize(new Dimension(400, 400)); // frame size
  33.         window.setResizable(true);  
  34.  
  35.  
  36.         cardLayout = new CardLayout();  // PANELS     
  37.         cards = new JPanel(cardLayout);   //PANELS
  38.  
  39.  
  40.  
  41.  
  42.         window.add(cards);
  43.         cards.add(menu, "Main Menu");
  44.         cards.add(addBooks, "Add Books");
  45.         cards.add(addSoftwares, "Add Softwares");
  46.         cards.add(makeOrderCard, "Make Order");
  47.         cards.add(viewCartCard, "View Cart");
  48.  
  49.         cardLayout.show(cards, "Main Menu");
  50.         window.setVisible(true);
  51.     }
  52.  
  53.  
  54. }
  55.  
Oct 3 '15 #1
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