FileWriter not writing to text file (java)

Question

I am trying to write some variables to a text file once a user has inputted some data. I have had it working before but I was tinkering with it and now it doesn't write to the text file at all. Here is the code:

try (PrintWriter out = new PrintWriter(new BufferedWriter(
            new FileWriter("C:\\Users\\A612646\\workspace\\CarParkProject\\PrePaid.txt", true)))) {
        if (AmountofHours < 0 || AmountofHours > 24) {
            out.print(RegNo);
            out.print("\t" + AmountofHours);
            out.print("\t" + CreditCardNo);
            out.print("\t" + expiry);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

Answer 1

Are you sure the line:

if (AmountofHours < 0 || AmountofHours > 24)

should not be

if (AmountofHours > 0 && AmountofHours < 24)

You're saying if a car is parked less than 0 hours or more than 24 then write a line. I think you intend to say if a car is parked for longer than 0 hours and less than 24...

Answer 2

There is nothing wrong with the code!. This code writes the data to the text file. Make sure your logic is correct as willow512 suggested. I would suggest you debug the code to narrow the cause.

public class TestFile {

public static void main(String[] args) {
    int AmountofHours = 25;
    int RegNo = 52431;
    String CreditCardNo = "5315-XXXX-1456-XXXX";
    String expiry = "15/25";
    try (PrintWriter out = new PrintWriter(new BufferedWriter(
         new FileWriter("C:\\Users\\thanigaiarasur\\workspace\\ExploreThings\\PrePaid.txt", true)))) {
        if (AmountofHours < 0 || AmountofHours > 24) {
            out.print(RegNo);
            out.print("\t" + AmountofHours);
            out.print("\t" + CreditCardNo);
            out.print("\t" + expiry);

            System.out.println("printed successfully");
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

}

}

Answer 3

looks like you are opening a Filewriter, but not the File itself.

try this:

File file = new File("C:\\Users\\A612646\\workspace\\CarParkProject\\PrePaid.txt");
    if (!file.exists()) 
        file.createNewFile(); //this creates the file :)

FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw);

bw.write("content to write"); //here you will write you stuff
bw.close();