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Thread: I can't get Relative paths to work with the code I'm using.

  1. #1
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    Default I can't get Relative paths to work with the code I'm using.

    Hello, I have been working on this all day. I can't get Relative paths to work. I have created the class.dat file and I can't get java to recognize it. I am using Eclipse as an IDE. Was wondering if I could get Eclipse to recognize it. I tried with a .txt file as well and couldn't get that to work.



    import java.io.*;
     
    public class ReadBytes
    {
    	public static void main(String[] args)
    	{
    		try
    		{
    			FileInputStream file = new FileInputStream("class.dat");
    			boolean eof = false;
    			int count = 0;
    			while(!eof)
    			{
    				int input = file.read();
    				System.out.print(input + " ");
     
    				if (input == -1)
    					eof = true;
    				else
    					count++;
    			}
    			file.close();
    			System.out.println("\nBytes read: " + count);
     
    		}
    		catch (IOException e)
    		{
    			System.out.println("Error -- " + e.toString());
    		}
    	}
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: I can't get Relative paths to work with the code I'm using.

    Create a File object using the filename and print its absolute path to see where the program is looking for the file.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: I can't get Relative paths to work with the code I'm using.

    Quote Originally Posted by Norm View Post
    Create a File object using the filenname and print its absolute path to see where the program is looking for the file.
    I'm sorry, just a beginner, not sure exactly how to do that. How do I create a File object and then print its absolute path. I found the code from an old textbook call Java 2 in 21 days.

    Would appreciate if you could break it down for me.

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: I can't get Relative paths to work with the code I'm using.

    Something like this:
    File aFile = new File<THEPathHERE>); // create a File object
    System.out.println("an ID "+ aFile.getabolutepath()); // print its absolute path

    check the spelling.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: I can't get Relative paths to work with the code I'm using.

    Quote Originally Posted by Norm View Post
    Something like this:
    File aFile = new File<THEPathHERE>); // create a File object
    System.out.println("an ID "+ aFile.getabolutepath()); // print its absolute path

    check the spelling.
    Hi Norm

    Here is my code:
    import java.io.*;
     
    public class ReadBytes
    {
    	public static void main(String[] args)
    	{
     
    		File afile = new File("C:/Users/scott/Desktop/Midterm Quiz/Midtermexam");
    		System.out.println("an ID "+ afile.getAbsolutePath());
     
     
     
    	}
    }

    I get the absolute path in the console back as C:\Users\scott\Desktop\Midterm Quiz\Midtermexam

    How do I get the relative path?

    Thanks

    S

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: I can't get Relative paths to work with the code I'm using.

    The code in post#1 was having the problem. You need to find out where the program was looking for the file referenced there:
    FileInputStream file = new FileInputStream("class.dat");

    You want to know where the program is looking for the file: class.dat.
    From post#2:
    Create a File object using the filename: class.dat and print its absolute path to see where the program is looking for the file.
    If you don't understand my answer, don't ignore it, ask a question.

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