When I use "|" as a delimiter, my program seems to take each character
as a new token, instead of tokenizing at the bar. When I use ":" as the
delimiter, I get what I expect when reading "delim.txt".

Am I doing something incorrectly?

"delim.txt":
100:|first:|second:|third
200:|alpha:|beta:|gamma
300:|roy:|gee:|biv

Here is the program:
package scantext;

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

public class TheClass {

    private static void readFile(String filename, String delim) {
        try {
            File file = new File(filename);
            Scanner scanner = new Scanner(file);
            scanner.useDelimiter(System.getProperty("line.separator"));
            while (scanner.hasNext()) {
                System.out.println();
                String theNext = scanner.next();
                System.out.println(theNext);
                parseline(theNext, delim);
            }
            scanner.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    public static void parseline(String line, String delim) {
        Scanner lineScanner = new Scanner(line);
        lineScanner.useDelimiter(delim);
        System.out.println("delimiter is >" + lineScanner.delimiter() + "<");
        int a = lineScanner.nextInt();
        String b = lineScanner.next();
        String c = lineScanner.next();
        String d = lineScanner.next();
        System.out.println(
                "a = " + a +
                ", b= " + b +
                ", c = " + c +
                ", d = " + d);
    }

    public static void main(String[] args) {
        readFile("delim.txt", "|");
        System.out.println();
        readFile("delim.txt", ":");
    }
}

The output is:

100:|first:|second:|third
delimiter is >|<
a = 1, b= 0, c = 0, d = :

200:|alpha:|beta:|gamma
delimiter is >|<
a = 2, b= 0, c = 0, d = :

300:|roy:|gee:|biv
delimiter is >|<
a = 3, b= 0, c = 0, d = :

100:|first:|second:|third
delimiter is >:<
a = 100, b= |first, c = |second, d = |third

200:|alpha:|beta:|gamma
delimiter is >:<
a = 200, b= |alpha, c = |beta, d = |gamma

300:|roy:|gee:|biv
delimiter is >:<
a = 300, b= |roy, c = |gee, d = |biv