java如何从文本文件读取标签
所以我有一个程序，需要保存到文件中，然后从中读取，我已经从文本文件中读取了，但我无法从文件中读取，我以前有过静态的，但老师不喜欢，让我将其更改为从文件中读取。我以前从未使用过gui，他在gui中向我们展示的唯一内容就是如何放置按钮和文本字段
private DefaultListModel<String> populateFlights() { // populate avalible flights to the list
DefaultListModel<String> list = new DefaultListModel<String>();
ArrayList<Flight> FlightList = MainMenu.getAirlineMgr().getFlightList();
// loop to get flight list
for (int i = 0; i < FlightList.size(); i++) {
list.addElement(FlightList.get(i).getFlightNumber());
}
return list;
}
private void PopulateAvailableSeats(Flight flight, JComboBox<String> cb) {
Seat lSeat;
cb.removeAllItems();
for (int i = 0; i < flight.getSeats().size(); i++) {
lSeat = flight.getSeats().get(i);
if (lSeat.getSeatstatus() == Seat.Status.AVAILABLE) {
cb.addItem(lSeat.getSeatNo());
}
}
}
private Double CalculateTotalCost(Flight flight, int discount, Boolean suitCase) {
Double total;
total = flight.getCost() - ((discount * flight.getCost()) / 100); // discount
if (suitCase) { // if statement to add suitcase if applyed
total = total + 50;
}
return total;
}
private void ConfirmBooking(Flight flight, Passenger passenger, String seatNumber, Boolean suitCase) {
Double totalCost = CalculateTotalCost(flight, passenger.getDiscount(), suitCase);
Seat lSeat = flight.getSeatByNumber(seatNumber);
// Assign the Passenger to Seat and change StatusSeat to RESERVED/booked
passenger.setSeatNo(lSeat.getSeatNo());
lSeat.setPassenger(passenger);
lSeat.setSeatstatus(Seat.Status.RESERVED);
// Create a booking
Book booking = new Book(passenger);
booking.setFlightToBook(flight);
booking.setSeat(lSeat);
booking.setSuitCase(suitCase);
booking.setTotalCost(totalCost);
// Assign booking to the passenger
passenger.setReservation(booking);
// Displays save dialog
try {
booking.SaveTicket();
} catch (IOException ioe) {
JOptionPane.showMessageDialog(null, "File Error");
}
}
private Boolean ValidateBooking(Flight flight) {
return (flight.getFlightStatus() == Flight.Status.AVAILABLE)
|| (flight.getFlightStatus() == Flight.Status.CHECKING);
}
public BookPanel() {
setBackground(new Color(176, 224, 230));
setLayout(null);
JLabel label = new JLabel("Departure Date:");
label.setBounds(10, 58, 112, 14);
add(label);
JLabel lblSelectAFlight = new JLabel("Select a flight:");
lblSelectAFlight.setFont(new Font("Tahoma", Font.BOLD, 11));
lblSelectAFlight.setBounds(10, 306, 121, 14);
add(lblSelectAFlight);
JLabel label_2 = new JLabel("Departure Airport:");
label_2.setBounds(10, 9, 112, 14);
add(label_2);
JLabel label_3 = new JLabel("Arrival Airport:");
label_3.setBounds(218, 9, 112, 14);
add(label_3);
JLabel label_4 = new JLabel("Arrival Date:");
label_4.setBounds(218, 58, 112, 14);
add(label_4);
JLabel lblFlightStatus1 = new JLabel("Flight Status:");
lblFlightStatus1.setBounds(10, 108, 99, 14);
add(lblFlightStatus1);
JLabel lbDepartureAirport = new JLabel("");
lbDepartureAirport.setForeground(Color.GREEN);
lbDepartureAirport.setBackground(Color.ORANGE);
lbDepartureAirport.setBounds(10, 33, 121, 14);
add(lbDepartureAirport);
JLabel lbDepartureDate = new JLabel("");
lbDepartureDate.setForeground(Color.GREEN);
lbDepartureDate.setBackground(Color.ORANGE);
lbDepartureDate.setBounds(10, 83, 183, 14);
add(lbDepartureDate);
JLabel lbArrivalAirport = new JLabel("");
lbArrivalAirport.setForeground(Color.MAGENTA);
lbArrivalAirport.setBackground(Color.ORANGE);
lbArrivalAirport.setBounds(218, 34, 121, 13);
add(lbArrivalAirport);
JLabel lbArrivalDate = new JLabel("");
lbArrivalDate.setForeground(Color.MAGENTA);
lbArrivalDate.setBackground(Color.ORANGE);
lbArrivalDate.setBounds(218, 83, 183, 14);
add(lbArrivalDate);
JLabel lblFlightStatus = new JLabel("");
lblFlightStatus
.setFont(lblFlightStatus.getFont().deriveFont(lblFlightStatus.getFont().getStyle() | Font.BOLD, 13f));
lblFlightStatus.setForeground(Color.BLACK);
lblFlightStatus.setBackground(Color.ORANGE);
lblFlightStatus.setBounds(10, 133, 99, 23);
add(lblFlightStatus);
JLabel lblPassengerInfo = new JLabel("Passenger info:");
lblPassengerInfo.setFont(new Font("Tahoma", Font.BOLD, 11));
lblPassengerInfo.setBounds(10, 167, 99, 14);
add(lblPassengerInfo);
JLabel lblName = new JLabel("Name:");
lblName.setBounds(10, 192, 69, 14);
add(lblName);
JLabel lbPassengerName = new JLabel("");
lbPassengerName.setFont(new Font("Tahoma", Font.BOLD, 12));
lbPassengerName.setBackground(Color.WHITE);
lbPassengerName.setBounds(99, 192, 187, 14);
add(lbPassengerName);
JLabel lbSureName = new JLabel("");
lbSureName.setFont(new Font("Tahoma", Font.BOLD, 12));
lbSureName.setBackground(Color.WHITE);
lbSureName.setBounds(99, 212, 187, 14);
add(lbSureName);
JLabel lblSureName = new JLabel("Sure Name:");
lblSureName.setBounds(10, 212, 73, 14);
add(lblSureName);
JLabel lblDiscount1 = new JLabel("Discount:");
lblDiscount1.setBounds(342, 182, 59, 14);
add(lblDiscount1);
JLabel lblDiscount = new JLabel("");
lblDiscount.setFont(new Font("Tahoma", Font.BOLD, 12));
lblDiscount.setBounds(342, 212, 59, 14);
add(lblDiscount);
JLabel lblCost = new JLabel("Cost:");
lblCost.setBounds(342, 133, 37, 14);
add(lblCost);
JSeparator separator = new JSeparator();
separator.setBounds(449, 144, 1, 2);
add(separator);
JSeparator separator_1 = new JSeparator();
separator_1.setOrientation(SwingConstants.VERTICAL);
separator_1.setBounds(412, 9, 13, 393);
add(separator_1);
JLabel lblType = new JLabel("Type:");
lblType.setBounds(10, 233, 73, 14);
add(lblType);
JLabel lbType = new JLabel("");
lbType.setFont(new Font("Tahoma", Font.BOLD, 12));
lbType.setBounds(103, 233, 187, 14);
add(lbType);
JComboBox<String> cbSeats = new JComboBox<String>();
cbSeats.setBounds(289, 313, 112, 20);
add(cbSeats);
JLabel lblAvailableSeats = new JLabel("Available seats:");
lblAvailableSeats.setBounds(196, 316, 112, 14);
add(lblAvailableSeats);
JLabel lbCost = new JLabel("");
lbCost.setFont(new Font("Tahoma", Font.BOLD, 12));
lbCost.setBounds(342, 157, 59, 14);
add(lbCost);
JLabel lblTotalCost1 = new JLabel("Total Cost:");
lblTotalCost1.setBounds(342, 233, 69, 14);
add(lblTotalCost1);
JLabel lblTotalCost = new JLabel("");
lblTotalCost.setFont(new Font("Tahoma", Font.BOLD, 14));
lblTotalCost.setBounds(328, 258, 73, 23);
add(lblTotalCost);
// Action for CheckBox
JCheckBox chckbxNewCheckBox = new JCheckBox("Suite case (+$50)");
chckbxNewCheckBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
lblTotalCost.setText(Double.toString(
CalculateTotalCost(flightSelected, passenger.getDiscount(), chckbxNewCheckBox.isSelected()))
+ "$");
}
});
chckbxNewCheckBox.setBounds(180, 272, 142, 23);
add(chckbxNewCheckBox);
// Action for button cancel
JButton button = new JButton("Cancel");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
MainMenu.hideBook();
}
});
button.setBounds(10, 379, 89, 23);
add(button);
// Action for button confirm
JButton btnPay = new JButton("Confirm");
btnPay.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
if (ValidateBooking(flightSelected)) {
ConfirmBooking(flightSelected, passenger, cbSeats.getSelectedItem().toString(),
chckbxNewCheckBox.isSelected());
// JOptionPane.showMessageDialog(null,
// directory.getAbsolutePath()));
MainMenu.hideBook();
} else {
JOptionPane.showMessageDialog(null, "The flight is not available");
}
}
});
btnPay.setBounds(312, 379, 89, 23);
add(btnPay);
// passenger info
passenger = MainMenu.getAirlineMgr().getPassenger();
if (passenger != null) {
lbPassengerName.setText(passenger.getFname());
lbSureName.setText(passenger.getSname());
lblDiscount.setText(Integer.toString(passenger.getDiscount()) + "%");
if (passenger.getClass() == Business.class) {
lbType.setText("BUSINESS");
} else {
if (passenger.getClass() == Ordinary.class) {
lbType.setText("ORDINARY");
} else {
if (passenger.getClass() == Island.class) {
lbType.setText("ISLAND");
}
}
}
}
// flight info
JList list = new JList(populateFlights());
list.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
flightSelected = MainMenu.getAirlineMgr().getFlightByNumber(list.getSelectedValue().toString());
lbDepartureAirport.setText(flightSelected.getDepartureAirport());
lbArrivalAirport.setText(flightSelected.getArrivalAirport());
lbDepartureDate.setText(flightSelected.getDepartureDate().toString());
lbArrivalDate.setText(flightSelected.getArrivalDate().toString());
lbCost.setText(Double.toString(flightSelected.getCost()) + "£");
PopulateAvailableSeats(flightSelected, cbSeats);
lblTotalCost.setText(Double.toString(
CalculateTotalCost(flightSelected, passenger.getDiscount(), chckbxNewCheckBox.isSelected()))
+ "£");
// if statement for STATUS
if (flightSelected.getFlightStatus() == Flight.Status.AVAILABLE) {
lblFlightStatus.setText("AVAILABLE");
} else {
if (flightSelected.getFlightStatus() == Flight.Status.BOARDING) {
lblFlightStatus.setText("BOARDING");
} else {
if (flightSelected.getFlightStatus() == Flight.Status.CHECKING) {
lblFlightStatus.setText("CHECKING");
} else {
if (flightSelected.getFlightStatus() == Flight.Status.CLOSED) {
lblFlightStatus.setText("CLOSED");
}
}
}
}
}
});
list.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
list.setBounds(104, 314, 89, 88);
add(list);
JLabel lblBookAFlight = new JLabel("Book a Flight");
lblBookAFlight.setFont(new Font("Tele-Marines", Font.PLAIN, 12));
lblBookAFlight.setBounds(140, 142, 81, 14);
add(lblBookAFlight);
}
}
哦，是的，如果这里的帮助是保存到文件代码：pic of save to file
共 (0) 个答案