Formatter and Scanner not outputting into a file

Question

public static void addR(){

Scanner ip = new Scanner(System.in);
System.out.printf("%s%n%s%n","Enter account num, fname, lname and balance.", "enter EOF indicator." );

while(ip.hasNext()){
try{
output.format("%d %s %s %.2f%n",
ip.nextInt(),ip.next(),ip.next(),ip.nextDouble());
}catch(FormatterClosedException ex){
System.err.println("error writing to file");
break;
}catch(NoSuchElementException ex){
System.err.println("Invalid input , try again");
ip.nextLine();
}
System.out.print("? ");
} // end while
if(output!=null)output=null;
}

I opened the file with no errors but it don't write into the file

Answer 1

Ok I understood , I can maybe help you , I found 12 error https://code.sololearn.com/cFV3x1Lgigy7/?ref=app