I am trying to save my ArrayList into a text file. But the format of how it is saved is wrong. My code:
ArrayList<Vehicle> vehs = new ArrayList<Vehicle>();
vehs.add(new Vehicle("QJT123", "Starlet 99", 35.0, 190000));
vehs.add(new PremiumVehicle("TUX132", "BWM 05 ", 90.0, 12000, 100, 10000, 5000));
Constructor used for these 2:
public PremiumVehicle(String vehicleID, String description, double dailyRate, int odometer, int allowance, int serLength, int lastOdo) //subclass
public Vehicle(String vehicleID, String description, double dailyRate, int odometer) //Superclass
Both of these are stored into the Vehicle ArrayList. Code to save to text file:
private static void saveFile(ArrayList<Vehicle> vehs){
File fileName = new File("VehicleList.txt");
try {
FileWriter fw = new FileWriter(fileName);
Writer output = new BufferedWriter(fw);
for (int i = 0; i < vehs.size(); i++){
output.write(vehs.get(i).toString() + "\n");
}
output.close();
} catch (Exception e) {
JOptionPane.showMessageDialog(null, "I cannot create that file");
}
}
My output in VehicleList.txt:
vehicle ID = QJT123 Description = Starlet 99 Status = A Daily Rate = 35.0 Odometer reading = 190000vehicle ID = TUX132 Description = BWM 05 Status = A Daily Rate = 90.0 Odometer reading = 12000 Mileage allowance = 100 service length = 10000 Last Service = 5000
How do i make it such that each new line is added when writing in a new ArrayList object, e.g:
vehicle ID = QJT123 Description = Starlet 99 Status = A Daily Rate = 35.0 Odometer reading = 190000
vehicle ID = TUX132 Description = BWM 05 Status = A Daily Rate = 90.0 Odometer reading = 12000 Mileage allowance = 100 service length = 10000 Last Service = 5000
I've tried using vehs.get(i).toString() + "\n"
but it doesn't seem to work.
BufferedWriter has a newLine()
method, you may use that if you declare output
as a BufferedWriter
.
private static void saveFile(ArrayList<Vehicle> vehs){
File fileName = new File("VehicleList.txt");
try {
FileWriter fw = new FileWriter(fileName);
BufferedWriter output = new BufferedWriter(fw);
for (int i = 0; i < vehs.size(); i++){
output.write(vehs.get(i).toString());
output.newLine();
}
output.close();
} catch (Exception e) {
JOptionPane.showMessageDialog(null, "I cannot create that file");
}
}
Also for the javadoc of the method :
Writes a line separator. The line separator string is defined by the system property line.separator, and is not necessarily a single newline ('\n') character.