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Thread: Error in code

  1. #1
    Junior Member
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    Question Error in code

    The point of this program is to read characters from a txt file and store them into a 2D array. After this has been accomplished, the information is to be printed in the same manner it is read from in the txt file.

    Here is the code I have so far:

    import java.io.File;
    import java.io.FileNotFoundException;
    import java.util.Scanner;

    public class Main
    {

    public static void main(String[] args) throws FileNotFoundException
    {
    File file = new File("sampleMaze.txt");
    Scanner s = new Scanner(file);
    Maze maze = new Maze(s);
    System.out.print(file);
    }

    }

    import java.io.File;
    import java.util.Scanner;
    import java.util.Arrays;


    public class Maze
    {
    public int width;
    public int height;
    public Square[][] sampleMaze;


    Maze(Scanner file)
    {
    this.width = Integer.parseInt(file.next());
    this.height = Integer.parseInt(file.next());
    this.sampleMaze = new Square[height][width];

    for(int i = 0; i < height; i++)
    {
    String s = file.next();

    for(int j = 0; j < width; j++)
    {
    sampleMaze[height][width] = Square.fromChar(s.charAt(j));
    }


    }
    System.out.print(sampleMaze[height][width]);
    }


    }



    public enum Square
    {
    WALLS("#"),
    OPEN_SPACES("."),
    START("o"),
    FINISH("*");
    String x;
    Square(String x)
    {
    this.x = x;
    }
    public String toString()
    {
    return x;
    }
    public static Square fromChar(char x)
    {
    if (x == '#')
    return WALLS;
    else if (x == '.')
    return OPEN_SPACES;
    else if (x == 'o')
    return START;
    else if (x == '*')
    return FINISH;
    else
    throw new IllegalArgumentException();
    }
    }

    And this is the error I am receiving when trying to accomplish the goal of the project:

    Exception in thread "main" java.lang.NumberFormatException: For input string: "############"
    at java.lang.NumberFormatException.forInputString(Unk nown Source)
    at java.lang.Integer.parseInt(Unknown Source)
    at java.lang.Integer.parseInt(Unknown Source)
    at Maze.<init>(Maze.java:15)
    at Main.main(Main.java:20)


    Anyone know what's going on here and how I can correct this??

    The information I am trying to store in a 2D array and then print is this:

    ############
    #.#........#
    #.#.######.#
    #.#....#...#
    #.###.*#.#.#
    #...####.#.#
    #.#.#..#.#.#
    #.#.#.##.#.#
    #o#......#.#


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Error in code

    Exception in thread "main" java.lang.NumberFormatException: For input string: "############"
    At line 15 the code calls the parseInt() method with a String that does not contain numeric digits: "############"

    Make sure the data in the file being read has the expected contents.
    If you don't understand my answer, don't ignore it, ask a question.

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