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Thread: simple program for reading text file

  1. #1
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    Default simple program for reading text file

    please if anyone could help me with the following code that would be greatly appreciated

    the code come more or less from a tutorial book

    1.
    import java.io.*;

    public class testRead{

    public static void main (String []args){
    File f = new File("test.txt");
    BufferedReader in = new BufferedReader(new FileReader(f));


    Movie movie = readMovie(in);

    public Movie readMovie(BufferedReader in)
    {
    String line = "";
    String [] data;
    String string1,string2,string3;



    line = in.readLine();

    if (line !=null)
    {
    data = line.split("\t");
    string1 =data[0];
    string2=data[1];
    string3 =data[2];
    return new Movie(string1,string2,string3);
    }
    else
    {
    return null;
    }
    }

    }

    }

    2.


    public class Movie{

    public String string1, string2, string3;

    public Movie(String string1, String string2, String string3)
    {
    this.string1 = string1;
    this.string2 = string2;
    this.string3 = string3;

    }

    }

    3. a text file called test.txt with the following data


    hello 1 29
    john 2 30


  2. #2
    Member snowguy13's Avatar
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    Default Re: simple program for reading text file

    What exactly is your question? Is there something you don't understand? If so, what?

    Is the program giving an error? If it is, could you post it here?

    Also, could you use highlight tags for your code please?
    They work like this:

    [highlight=Java]
    your code here
    [/highlight]


    Also, my first impression is that you shouldn't be using...

    line.split("\t");

    ...because 1) I'm not sure if "/t" is a value stored by .txt files, and 2) I don't know if I see any spacings equivalent of "/t" in the file you presented...

    hello 1 29
    john 2 30

    Perhaps instead you could use...

    line.split(" ");

    ...so it splits the lline at space characters.
    Last edited by snowguy13; December 12th, 2011 at 04:47 PM.
    Use highlight tags to help others help you!

    [highlight=Java]Your prettily formatted code goes here[/highlight]

    Using these tags makes your code formatted, and helps everyone answer your questions more easily!




    Wanna hear something funny?

    Me too.

  3. #3
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    Default Re: simple program for reading text file

    i am getting the following errors:


    testRead.java12:error:illegal start of expression
    public Movie readMove(BufferedReader in)
    ^

    testRead.java12:error:";" expected
    public Movie readMove(BufferedReader in)
    ^
    testRead.java12:error:";" expected
    public Movie readMove(BufferedReader in)
    ^

  4. #4
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    Default Re: simple program for reading text file

    sorry, in what i just posted i tried to get the ^ symbol under the 'p' in public first time, then under '(', then under ')'

  5. #5
    Member snowguy13's Avatar
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    Default Re: simple program for reading text file

    Oh! I see your problem! You have the...

    readMovie(BufferedReader in)

    ...method defined inside your main method. So, I think you can get rid of these errors my moving the method outside of the main method.
    Use highlight tags to help others help you!

    [highlight=Java]Your prettily formatted code goes here[/highlight]

    Using these tags makes your code formatted, and helps everyone answer your questions more easily!




    Wanna hear something funny?

    Me too.

  6. #6
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    Default Re: simple program for reading text file

    thanks for help so far - forgot to come back and respond at the time

    i'm also having a couple of problems with the following
    (missing return type and unreachable statment):

    [highlight = Java]

    import java.util.Scanner;

    public class testMethod{
    static Scanner sc = new Scanner(System.in);
    public static void main (String []args){


    boolean continueOrNot = true;
    do

    {
    playGame();
    }
    while (continueOrNot);
    }

    public static void playGame()
    {
    int number = (int)(Math.random()*10)+1;
    int guess = getGuess();

    }

    public static int getGuess()
    {
    boolean validInput=true;
    while (!validInput)
    {
    int guess = sc.nextInt();
    if ((guess <1) || (guess >10))
    {
    System.out.print("Wrong");
    validInput = false;
    }
    else
    {
    return guess;
    validInput = true;
    }
    }//end of while

    }//end of getGuess method



    }//end of class

    [/highlight]

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