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Thread: Having a problem with java IO

  1. #1
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    Default Having a problem with java IO

    hey, im particularly new to this and i think this might be an easy one for you guys.
    It would be greatly appreciated if you could solve any one of this, or give me any help or insight into how i should go about solving this.

    it first asks the user to enter an integer, then you can either enter a new integer, open an existing file, allow current data to be altered, save data with same file name, or save data with new file name.

    please help!


  2. #2
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    Default Re: Having a problem with java IO

    Would you like to cheat and have someone write the code for you? Or would you like to actually learn and write the code yourself?

    If the second option then what you need to do is make an attempt, start writing code and when you get stuck post your code, include error messages and ask a specific question. Do that and you will get plenty of help.

    On the other hand if you want the first option then all you will get is scorn and ridicule.
    Improving the world one idiot at a time!

  3. #3
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    Default Re: Having a problem with java IO

    Ok so im trying to open a new file, so far i have this
    public void newFile ()
    {
    title ();
    c.println (" Welcome, Come create a New File ");
    c.println ("");

    c.print ("Enter name for file : ");
    fileName = c.readLine ();

    try
    {
    output = new PrintWriter (new FileWriter (fileName));
    c.println ("");
    c.println ("You have just created the file " + fileName);
    c.println ("");

    askData ();

    output.close ();
    }
    catch (IOException e)
    {
    }
    }
    which first creates the file with an integer inside of it.
    then to open the actual file i just created i have this method :
    public void openFile ()
    {
    title();
    c.println ("which file");
    fileName = c.readLine ();

    try
    {
    // Open the file that is the first
    // command line parameter
    FileInputStream fstream = new FileInputStream (fileName);
    // Get the object of DataInputStream
    DataInputStream in = new DataInputStream (fstream);
    BufferedReader br = new BufferedReader (new InputStreamReader (in));
    String strLine;
    //Read File Line By Line
    while ((strLine = br.readLine ()) != null)
    {
    // Print the content on the console
    System.out.println (strLine);
    }
    //Close the input stream
    in.close ();
    }
    catch (Exception e)
    { //Catch exception if any
    System.err.println ("Error: " + e.getMessage ());
    }
    }

    but the problem is that it opens the file in a really wierdish console called standard input/output console and is soon as i close it the whole program closes and i cant have that because i actually have other methods to run, so what do i do?

  4. #4
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    Default Re: Having a problem with java IO

    1. Wrap the code in code tags.
    2. Can you be more clear and explainatory in your askings? I don't know what do you mean by,
    and is soon as i close it the whole program closes and i cant have that because i actually have other methods to run, so what do i do?

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