[SOLVED] Simple Scanner Method - Plus Sign throwing me off...

[Josh.Hoekstra]

Hello friends, this should be an easy fix, I hope:

I have a method which uses a scanner to read an .ini file. The .ini file looks like this:

**Product_B Path
//server/folder/folder/ProductB

**Product_B+ Path
//server/folder/folder/ProductB+

**Product_C Path
//server/folder/folder/ProductC

My method reads through the file using a scanner, looking to see if the variable productType (Product_B, Product_B+, or Product_C) matches any of the lines using scanner.findInLine(). If it does, then the method returns the following line (the path).

Here is my code:

public String getPath (String productType) {
String file = "//server/folder/folder/file.ini";
try {
Scanner scanner = new Scanner(new File(file));
while(scanner.findInLine("" + productType)==null) {
if(!scanner.hasNextLine()) {
scanner.close();
return null;
}
scanner.nextLine();
}
//productType has been found, now return the directory path
scanner.nextLine();
return scanner.nextLine();
}
catch (FileNotFoundException err) {
err.printStackTrace();
}
return null;
}


So here is my problem: when I send the method "Product_B" or "Product_C", it works as it should, returning the correct directory. However, whenever I send the method "Product_B+" it returns the Product_B directory. I think the plus sign is messing me up somehow, but I don't know why. If I change the "+" to something else like a "P" then it works fine.

Can anyone offer help? Thanks very much. :)

[hardwired]

Check the Method Detail for the findInLine(String pattern) method to see that the method ignores delimiters. The "+" character might be counted as a delimiter.
This seems to work okay.

import java.io.*;
import java.util.Scanner;

public class ScanningTest {
    public static void main(String[] args) {
        String[] types = {
            "Product_B Path",
            "Product_B+ Path",
            "Product_C Path"
        };
        for(int i = 0; i < types.length; i++) {
            String path = getPath(types[i]);
            System.out.printf("path for %s = %s%n", types[i], path);
        }
    }

    private static String getPath (String productType) {
        String filePath = "scanning.txt";
        String retVal = null;
        try {
            Scanner scanner = new Scanner(new File(filePath));
            while(scanner.hasNextLine()) {
                String line = scanner.nextLine();
                if(line.indexOf(productType) != -1) {
                    retVal = scanner.nextLine();
                    break;
                }
            }
            scanner.close();
        } catch (FileNotFoundException err) {
            err.printStackTrace();
        }
        return retVal;
    }
}

[Josh.Hoekstra]

hardwired,

Thank you very much for the help, your suggestion works perfectly. Just FYI, I did make many attempts at changing the delimiter to no avail. The default delimiter given from scanner.delimiter() is: \p{javaWhitespace}+

Thanks again.