public void buyItemFromUser(User buyer, User seller, Item currentItem)
// PRE: buyer, seller, currentItem must be initialized
// POST: Purchases item from the store and has stores it into inventory.
{
int buyer_balance; // The new balance of the buyer
int seller_balance; // The new balance of the seller
String str; // First query
String str2; // Second query
String str3; // Third query
buyer_balance = buyer.getBalance() - currentItem.getPrice();
seller_balance = seller.getBalance() + currentItem.getPrice();
if (buyer_balance > 0) // If the buyer wont go negative
{
str =
String.format(
"Update users set balance = (%d) where user_name = '%s'",
buyer_balance, buyer.getUserName());
str2 =
String.format(
"Update users set balance = (%d) where user_name = '%s'",
seller_balance, seller.getUserName());
str3 =
String.format(
"Update items set owner_id = (%d) where item_name = '%s'",
buyer.getUserId(), currentItem.getItemName());
updateTables(str, str2, str3);
} else {
// Prompt the user with an error
JOptionPane.showMessageDialog(
null, "You will go bankrupt if you try buying that, try selling some items.");
}
}
// Constructor receives the filename
Rolodex(String filename) throws FileNotFoundException {
File file = new File(filename);
Scanner scanner = new Scanner(file);
// Split the line with ~
while (scanner.hasNext()) {
tokens = scanner.nextLine().split("~");
name = tokens[0];
email = tokens[1];
pictures = tokens[tokens.length - 1];
User user = new User();
user.setUserName(name);
user.setUserEmail(email);
user.setPicture(pictures);
userList.add(user);
}
frame = new JFrame("Rolodex");
frame.setSize(700, 200);
// Menu
JMenuBar jmb = new JMenuBar();
JMenu jmFile = new JMenu("File");
JMenuItem jmiOpen = new JMenuItem("Open");
jmiOpen.setEnabled(false);
JMenuItem jmiExit = new JMenuItem("Exit");
jmiExit.setMnemonic(KeyEvent.VK_X);
jmFile.add(jmiOpen);
jmFile.addSeparator();
jmFile.add(jmiExit);
jmb.add(jmFile);
jmiOpen.addActionListener(this);
jmiExit.addActionListener(this);
JMenu jmTabs = new JMenu("Tabs");
jmTabs.setMnemonic(KeyEvent.VK_T);
JMenu jmiplacement = new JMenu("Placement");
JMenuItem jmitop = new JMenuItem("Top");
JMenuItem jmiright = new JMenuItem("Right");
JMenuItem jmibottom = new JMenuItem("Bottom");
JMenuItem jmileft = new JMenuItem("Left");
jmiplacement.add(jmitop);
jmiplacement.add(jmiright);
jmiplacement.add(jmibottom);
jmiplacement.add(jmileft);
jmitop.addActionListener(this);
jmiright.addActionListener(this);
jmibottom.addActionListener(this);
jmileft.addActionListener(this);
JMenu jmilayoutpolicy = new JMenu("Layout policy");
JMenuItem jmiscroll = new JMenuItem("Scroll");
JMenuItem jmiwrap = new JMenuItem("Wrap");
jmilayoutpolicy.add(jmiscroll);
jmilayoutpolicy.add(jmiwrap);
jmiscroll.addActionListener(this);
jmiwrap.addActionListener(this);
JMenuItem jmidefaults = new JMenuItem("Defaults");
jmidefaults.setMnemonic(KeyEvent.VK_D);
jmidefaults.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_D, InputEvent.CTRL_MASK));
jmidefaults.addActionListener(this);
jmTabs.add(jmiplacement);
jmTabs.add(jmilayoutpolicy);
jmTabs.addSeparator();
jmTabs.add(jmidefaults);
jmb.add(jmTabs);
JMenu jmHelp = new JMenu("Help");
JMenuItem jmiabout = new JMenuItem("About");
jmiabout.addActionListener(this);
jmHelp.add(jmiabout);
jmb.add(jmHelp);
frame.setJMenuBar(jmb);
jtp = new JTabbedPane(SwingConstants.TOP, JTabbedPane.SCROLL_TAB_LAYOUT);
topPanel = new JPanel();
topPanel.setLayout(new BorderLayout());
for (User user : userList) {
image = new ImageIcon(user.getPicture());
panel = new JPanel();
labname = new JLabel("Name: ");
txtname = new JTextField(20);
txtname.setText(user.getUserName());
labemail = new JLabel("Email: ");
txtemail = new JTextField(20);
txtemail.setText(user.getUserEmail());
l = new JLabel(image);
l.setHorizontalAlignment(SwingConstants.LEFT);
panel.add(l);
panel.add(labname);
panel.add(txtname);
panel.add(labemail);
panel.add(txtemail);
jtp.addTab(user.getUserName(), panel);
topPanel.add(jtp);
}
frame.add(jtp);
center(frame);
frame.setVisible(true);
}