Thread: Writing Integers to a file

I'm trying to ask the user to enter 7 scores by writetofile method by a loop that get written on a file on a separate line.

This is what I have so far:

public static void main(String[] args) throws IOException {
        writeToFile ("c:\\scores.txt");
}
 
public static void writeToFile (String filename) throws IOException {
        BufferedWriter outputWriter = new BufferedWriter(new FileWriter(filename));
        Scanner reader = new Scanner (System.in);
        int Num;
        System.out.println ("Please enter 7 scores");
        Num= reader.nextInt ();
        while !(Num < 0) { 
        for (int i = 0; i <= 7; i++)
           Num= reader.nextInt ();
           outputWriter.write(Num);
           outputWriter.newLine();
        }
        outputWriter.flush(); 
        outputWriter.close();
}

On this line, while !(Num < 0) { the error is '(' expected...how do I fix this?
Also, the when I run the program, it asks for 7 scores, but it just keeps going with the user typing integers. Also, the file gets cleared and no scores show up there.

I fixed it, but the problem now is that it still takes more than 7 scores...and it does not seem to just stop.

Is this better?

 public static void writeToFile (String filename) throws IOException {
        BufferedWriter outputWriter = new BufferedWriter(new FileWriter(filename));
        Scanner reader = new Scanner (System.in);
        int Num;
        System.out.println ("Please enter 7 scores");
        Num= reader.nextInt ();
        while (!(Num < 0)) { 
            for (int i = 0; i <= 7; i++) {
                Num= reader.nextInt ();
                outputWriter.write(Num);
                outputWriter.newLine();
            }
        }
        outputWriter.flush(); 
        outputWriter.close();
}

It still has the same problems as before.

This is what happens
Please enter 7 scores
1
2
3
4
5
6
7
5
Exception in thread "main" java.lang.NumberFormatException: empty String
at sun.misc.FloatingDecimal.readJavaFormatString(Floa tingDecimal.java:1011)
at java.lang.Double.parseDouble(Double.java:540)
at writefile.Writefile.processFile(Writefile.java:46)
at writefile.Writefile.main(Writefile.java:19)
Java Result: 1
BUILD SUCCESSFUL (total time: 4 minutes 25 seconds)
It should read 7. How can i check the file? I entered 7 numbers at first, but nothing happened,but once I type in the eighth integer it gives me an error.
This is my code by the way.

public static void writeToFile (String filename) throws IOException {
        BufferedWriter outputWriter = new BufferedWriter(new FileWriter(filename));
        Scanner reader = new Scanner (System.in);
        int Num;
        System.out.println ("Please enter 7 scores");
            for (int i = 0; i <= 7; i++) {
                Num= reader.nextInt ();
                outputWriter.write(Num);
                outputWriter.newLine();
            }
        outputWriter.flush(); 
        outputWriter.close();
}

How do I fix this error?

I don't know how to do that because I thought one of the number I typed in would get printed onto the file.