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Thread: Why won't it read file?

  1. #1
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    Default Why won't it read file?

    Hello so for this problem i have to read a text file but for some reason it won't let me do it.

    this is my code:


    import java.io.BufferedReader; 
    import java.io.FileReader; 
    import java.io.IOException; 
    import java.util.Scanner; 
     
    public class Assignment102 { 
     
        public static void main(String[] args) { 
            try { 
                // Initialize min and max 
                int min = Integer.MAX_VALUE; 
                int max = Integer.MIN_VALUE; 
     
                // Construct a string with the name of the input file. You 
                // can use this to construct an appropriate Reader object. 
                String filename = "tai8.txt"; 
     
                FileReader fis = new FileReader(filename);
                BufferedReader b = new BufferedReader(fis);
     
                String line;
                while ((line = b.readLine()) != null)
                {
                    int number = Integer.parseInt(line.trim());
                    if (number < min) min = number;
                    if (number > max) max = number;
                }
     
                b.close();
                fis.close();
     
                // Print the results 
                System.out.println("Minimum value: " + min); 
                System.out.println("Maximum value: " + max); 
            } 
            catch(Exception ioe) { 
                ioe.printStackTrace(); 
            } 
        } 
     
    }

    when i compile it i get this error message:

    java.io.FileNotFoundException: tai8.txt (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(FileInputStream.jav a:120)
    at java.io.FileInputStream.<init>(FileInputStream.jav a:79)
    at java.io.FileReader.<init>(FileReader.java:41)
    at assignment.pkg10.pkg2.Assignment102.main(Assignmen t102.java:29)

    i'm not sure how to put the text file in the same directory as the java file. maybe that's what the issue is? can someone please help me with this? Thank you.


  2. #2
    Administrator copeg's Avatar
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    Default Re: Why won't it read file?

    You need to specify the absolute or relative path to the file. What you have done thus far in the source code is specify the relative path pointing to a file in the same directory as the java class file - move the text file into the same directory. You state you don't know how - this is more of an OS problem than a java problem, and I suggest solving this prior to anything else, as navigating an OS is the foundation to using a computer.

  3. #3
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    Default Re: Why won't it read file?

    How do I do that? I don't know how to place the text file in the same directory as the java file.

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    Default Re: Why won't it read file?

    Quote Originally Posted by tai8 View Post
    How do I do that? I don't know how to place the text file in the same directory as the java file.
    You've never moved a file on your computer before? Drag the file icon of one and drop it into the directory of the other.

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