Thread: Problem with FileWriter

Hello i have a question about my code : I'm trying to write a code which would read from command line and then it would create file nd write the input inside:

            if(input.startsWith("add"))
            {
                // Call the add method and pass a string array as argument which does not
                // include "add" and has split the remaining arguments by whitespace.
                System.out.println("In order to create new file: Write the date,time,hour, header and comment");
                Scanner scanner = new Scanner(System.in);
                Date date = new Date();
                String date2 = scanner.nextLine();
 
                SimpleDateFormat formatDate = new SimpleDateFormat("dd.mm.yyyy");
                String date_to_string = formatDate.format(date);
                System.out.println("Date is" + date_to_string);
 
              //  String date = scanner.toString();
                String time = scanner.toString();
                Integer duration = scanner.nextInt();
                String dur = Integer.toString(duration);
                String header = scanner.toString();
                String comment = scanner.toString();
 
                add(new String[]{date2,time,dur,header,comment});
 
  //              add(input.substring(4).split("\\s+"));
                continue;
            }

After the variables have been written, they should be added to a file

 private void add(String[] tokens) throws IOException {
 
        System.out.println("file : ");
 
        if(tokens.length < 5)
        {
            System.out.println("Illegal arguments");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        // TODO Check data validity and formating
        SimpleDateFormat df = new SimpleDateFormat("dd.mm.yyyy HH:mm");
        Date date = null;
        try {
            date = df.parse(tokens[0] + " " + tokens[1]);
        } catch (ParseException e){
            System.out.println("Error parsing date/time!");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        int duration = Integer.parseInt(tokens[2]);
        String header = tokens[3];
        String comment = tokens[4];
 
 
        // ToDo: Write the new date to a file in the directory "events" and send it to the other devices...
 
        File eventF = new File("D:\\Uni.lu\\events\\id.event.txt");
        try{
            if(!eventF.exists()){
                eventF.createNewFile();
                System.out.println("New file " + eventF.getName() + "was created");
 
                System.out.println("New file " + eventF.getName() + "was created");
            }
        }catch (IOException e){
            e.printStackTrace();
        }
 
//
//        try{
//            File file = new File("D:\\Uni.lu\\events\\id.event.txt");
//            FileWriter fileWriter = new FileWriter(file);
//            BufferedWriter out = new BufferedWriter(fileWriter);
//            out.write(date.toString());
//            out.write(duration);
//            out.write(header);
//            out.write(comment);
//            out.close();
//            out.flush();
//        }catch(Exception e){
//            System.err.println("Error: " +e.getMessage());
//        }
//
 
    }

My problem is that the file doesnt wants to be created And I dont know why. I have tried with simple piece of code to create file and with FileWriter since I want to write the variables into it.

Thank you for your help

thats the problem,i don't get any error messages that's why I'm so confused

--- Update ---

Well, i found that there is sth wrong with th scanner. I tried to print out the input but it doesnt work

here is the code with FileWriter

        private void add(String[] tokens) throws IOException {
 
        System.out.println("file : ");
 
        if(tokens.length < 5)
        {
            System.out.println("Illegal arguments");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        // TODO Check data validity and formating
        SimpleDateFormat df = new SimpleDateFormat("dd.mm.yyyy HH:mm");
        Date date = null;
        try {
            date = df.parse(tokens[0] + " " + tokens[1]);
        } catch (ParseException e){
            System.out.println("Error parsing date/time!");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        int duration = Integer.parseInt(tokens[2]);
        String header = tokens[3];
        String comment = tokens[4];
 
        try{
            File file = new File("D:\\Uni.lu\\events\\id.event.txt");
            FileWriter fileWriter = new FileWriter(file);
            BufferedWriter out = new BufferedWriter(fileWriter);
            out.write(date.toString());
            out.write(duration);
            out.write(header);
            out.write(comment);
            out.close();
            out.flush();
        }catch(Exception e){
            System.err.println("Error: " +e.getMessage());
        }
 
 
    }

--- Update ---

When I try to print out the input with System.out.println() it simply doesnt do anything it looks like that the scanner doesnt do anytthing

 if(input.startsWith("add"))
            {
                // Call the add method and pass a string array as argument which does not
                // include "add" and has split the remaining arguments by whitespace.
                System.out.println("In order to create new file: Write the date,time,hour, header and comment");
                Scanner scanner = new Scanner(System.in);
                Date date = new Date();
                String date2 = scanner.nextLine();
 
                SimpleDateFormat formatDate = new SimpleDateFormat("dd.mm.yyyy");
                String date_to_string = formatDate.format(date);
                System.out.println("Date is" + date_to_string);
 
              //  String date = scanner.toString();
                String time = scanner.nextLine();
                Integer duration = scanner.nextInt();
                String dur = Integer.toString(duration);
                String header = scanner.nextLine();
                String comment = scanner.nextLine();
 
                System.out.println(date2);
                System.out.println(time);
                System.out.println(dur);
                System.out.println(header);
                System.out.println(comment);
 
//                add(new String[]{date2,time,dur,header,comment});
 
                add(input.substring(4).split("\\s+"));
                continue;
            }

I'm talking about these prints. Where I try to print out the input..

my console shows this when I compile it:

EventManager started
If you need help please type help
>
add
In order to create new file: Write the date,time,hour, header and comment
14.03.2012 14:00 30 header comment
Date is29.25.2013

here is th main function which checks if the input is correct and is responsible for creating a File and storing all the input inside the file

 private void add(String[] tokens) throws IOException {
 
        System.out.println("file : ");
 
        if(tokens.length < 5)
        {
            System.out.println("Illegal arguments");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        // TODO Check data validity and formating
        SimpleDateFormat df = new SimpleDateFormat("dd.mm.yyyy HH:mm");
        Date date = null;
        try {
            date = df.parse(tokens[0] + " " + tokens[1]);
        } catch (ParseException e){
            System.out.println("Error parsing date/time!");
            System.out.println("add [date] [time] [duration] [header] [comment] "+
                    "--> add a new event with the given arguments; date format: "+
                    "dd.mm.yyyy; time format: hh:mm; duration in minutes");
            System.out.println();
            return;
        }
        int duration = Integer.parseInt(tokens[2]);
        String header = tokens[3];
        String comment = tokens[4];
 
 
        // ToDo: Write the new date to a file in the directory "events" and send it to the other devices...
 
        System.out.println("aaaa");
//        try{
//            if(!eventF.exists()){
//                eventF.createNewFile();
//                System.out.println("New file " + eventF.getName() + "was created");
//
//                System.out.println("New file " + eventF.getName() + "was created");
//            }
//        }catch (IOException e){
//            e.printStackTrace();
//        }
 
 
        try{
            File file = new File("D:\\Uni.lu\\events\\id.event.txt");
            FileWriter fileWriter = new FileWriter(file);
            BufferedWriter out = new BufferedWriter(fileWriter);
            out.write(date.toString());
            out.write(duration);
            out.write(header);
            out.write(comment);
            out.close();
            out.flush();
        }catch(Exception e){
            System.err.println("Error: " +e.getMessage());
        }
 
 
    }