Thread: Problem with Scanner

Hello everyone, I'm hoping someone here will be able to help me since I can't seem to find any information on a past issue like this.

What I am doing is reading a plain-text configuration file line by line for a project I am working on. But at the moment I don't seem to be able to even get Scanner to read the file.

Configuration file in question is attached (not allowed to link to pastebin sorry).

Distilled test code:

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
 
public class TestScannerMain {
	public static void main(String[] args) {
 
		try (Scanner scan = new Scanner(new File("Pony.txt"))) {
 
			while (scan.hasNextLine()) {
				System.out.println(scan.nextLine());
			}
 
		} catch (FileNotFoundException e) {
 
			e.printStackTrace();
		}
 
		System.out.println("Done");
	}
 
}

I have tried -

1. Recreating the file
2. Using a different file (Using a file I have created by hand seems to work but I need to use the existing files.)
3. Changing the extension (It originally was an .ini file but it is just plaintext with a different extension)

At this point I'm thinking it has to do with how the textfile is encoded but I have no idea what the arguments for the Scanner constructor using them for, and I can't seem to find any documentation with this information. Any ideas?

And thanks in advance for any help!

It outputs to my last sysout, I worded that badly, it will actually execute if I used a .txt file that I created. I've also ruled out a permissions issue as well.

--- Update ---

Originally Posted by Norm

The code works OK for me with my test file as input.

Yes, that's what's weird, if I try to output the config file I have hasNextLine() returns false and the output loop never executes.

Found the problem -

In the configuration file there is a Unicode character in line 19. Adding the "UTF-8" argument to the Scanner constructor resolved this issue. Now I feel like an idiot.

Thanks for the help anyways!