显示我订购的所有物品

问题描述

如何显示我在“销售报告文件”中订购的所有项目？就像我订购2个cookie一样，它将显示在销售报告文件中。我目前有此代码。

     private final Dispenser candy = new Dispenser(100,50);
     private final Dispenser chips = new Dispenser(100,65);
     private final Dispenser gum = new Dispenser(75,45);
     private final Dispenser cookies = new Dispenser(100,85);
     public int products;

     private final JButton candyB;
     private final JButton chipsB;
     private final JButton gumB;
     private final JButton cookiesB;


   private class ButtonHandler implements ActionListener
   {
     public void actionPerformed (ActionEvent e)
     {
        switch (e.getActionCommand()) 
        {
            case "Exit":
              System.exit(0);
            case "Candy":
                sellProduct(candy,"Candy");
                products++;
                break;
            case "Chips":
                sellProduct(chips,"Chips");
                products++;
                break;
            case "Gum":
                sellProduct(gum,"Gum");
                products++;
                break;
            case "Cookies":
                sellProduct(cookies,"Cookies");
                products++;
            case "Sales Report File":
               JOptionPane.showMessageDialog(null,"Items list sold + "+ DISPLAY ALL THE ITEMS ORDERED,"Sales Report ~ ",JOptionPane.PLAIN_MESSAGE)
                break;
     }
   }

解决方法

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