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Thread: File input & output

  1. #1
    Junior Member
    Join Date
    Dec 2012
    Thanked 0 Times in 0 Posts

    Default File input & output

    I have a java assignment due for college (I'm doing 2nd year multimedia programming) in a few weeks and Iím really struggling and donít have a clue what to do.

    The following is the first part of the assignment. I have to implement a Java application that demonstrates the use of file input/output and exception handling. my application should allow the user to enter data about some entity that is stored in a data file. My application should be able to read data from a data file, and to store that data in a set of objects.

    The following is what I have already. A lot of it is probably wrong, and I don't know what to do next.


    package books;
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileReader;
    import java.io.PrintWriter;
    import java.util.Scanner;
    public class BookTest {
    public static void main(String[] args) 
    throws FileNotFoundException
    File f = new File (input.txt);
    if ();
    FileReader = new FileReader();
    /* BufferedReader = new BufferedReader();
    PrintWriter pw = new PrintWriter(File);*/
    //Prompts the user for the input and output file names
    /* Scanner console = new Scanner(System.in);
    System.out.print("Input file: ");
    String inputFileName = console.next();
    System.out.print("Output file: ");
    String outputFileName = console.next();
    //Prompts the Scanner and PrintWriter objects for reading and writing
    File inputFile = new File(inputFileName);
    Scanner in = new Scanner(inputFile); 
    PrintWriter out = new PrintWriter(outputFileName);
    int lineNumber = 1;
    /* while (in.hasNextLine());
    String line = in.nextLine();
    out.println("/* " + lineNumber + " * " + line);
    out.close(); */


    package books;
    public class Books {
    private String title;
    private String authorFName;
    private String authorLName;
    private double price; 

    I would really appreciate it if anyone could help me please. Thank you.

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,405 Times in 2,358 Posts

    Default Re: File input & output

    what to do next
    Make a list of what the program is supposed to do. What things in the assignment does it do now?
    What remains to be done?

    Please edit your post and wrap your code with
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Junior Member
    Join Date
    Oct 2012
    Thanked 0 Times in 0 Posts

    Default Re: File input & output

    Are you in Iadt? Hahaha, I have the same problem <3

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