Thread: Recording data , so you know whats next

I have a ptoblem i have 3 types of data in one file for example car data , van data , truck data. The problem is i have to have a flag to check what data is next and set a variable , so we know what object to create and store.

Each data says with a "[" , followed by either a C , V ([Car data])
Java Code:
else if(lineOfText.startsWith("[V") && (lineOfText.startsWith("[T"))) // flag

{
lineOfText = null; //setting the variable to record the data
}
else
{
Scanner scanner2 = new Scanner(lineOfText);
scanner2.useDelimiter("[ ]*,[ ]*");

Vehicle newV = new Car();
newV.readData(scanner2); // Read in the line of data.
vehicleList.add(newV); // Store in the array.

scanner2.close();
//System.out.println(lineOfText);
}
}

scanner.close();
}

there is no problem yet because i just wanted to get this bit right first and it is else if(lineOfText.startsWith("[")

just wondering what should i put

--- Update ---

there is no problem yet because i just wanted to get this bit right first and it is else if(lineOfText.startsWith("[")

just wondering what should i put

thats what i think should work , when looking at the psuedo code =

while ( there are more lines in the file)
{
lineoftext = nextline from scanner
if (line start with //)
{
ignore
}
else if (line is blank)
{
ignore
}
else if (line starts with [)
{
set type of data
}
else {
deal correctly
}

the deal code will create an object , read in the data and also store it in the array
else
{
Scanner scanner2 = new Scanner(lineOfText);
scanner2.useDelimiter("[ ]*,[ ]*");

Vehicle newV = new Car();
newV.readData(scanner2); // Read in the line of data.
vehicleList.add(newV); // Store in the array.

scanner2.close();
//System.out.println(lineOfText);
}
}

thats what the code is , thats why im confused

yeah ino but how do i record it n use the result .

there should be 7 for the car , but it keeps coming up null and not storing anything and no it will follow a comment , blank lines then [Van data , then do the van data

java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:907)
at java.util.Scanner.next(Scanner.java:1416)
at Vehicle.readData(Vehicle.java:112)
at Car.readData(Car.java:35)
at ReservationSystem.readVehicleData(ReservationSyste m.java:77)

there is data there though , all the vehicles have regNo's and its saying that on 112 that it cant find the regNo,.

nothing is being read in

through the scanner in a different class in a method . and also in the sub class it reads in additional data

public void readData(Scanner scanner)
{
group = scanner.next();
vehID = scanner.next();
regNo = scanner.next();
make = scanner.next();
model = scanner.next();
String yes = scanner.next();
if(yes.equalsIgnoreCase("yes"))
{
airCon = true;
}
else if(yes.equalsIgnoreCase("no"))
{
airCon = false;
}
engineSize = scanner.nextDouble();
fuelType = scanner.next();
gearbox = scanner.next();
transmission = scanner.next();
mileage = scanner.nextInt();
dateFirstRegistered = scanner.next();


}