How would you create a Random String Generator using an instance of another class with parameters?

Create a Wheel class. The class will simulate spins of the roulette wheel in the range 1-n. Create a constructor that takes 3 parameters: a seed (int) a lower bound m (int) an upper bound n (int) Create a method spin() which returns the next random string generated by roll of the wheel. This method should return a string. You can use Random() to generate a number from 0 to (n-1-m) and then add m to get a number in the specified range. Use Random() to generate a bigInteger (you want large numbers) and then convert it to a String using the toString() method

Current code:

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

public class Wheel {

    public int seed, m, n;

    public Wheel(int seed, int m, int n) {
        seed = 100000001;

        Random random = new Random(seed);

        for(int x = 0; x < 10; x++) {

            System.out.println(100 * random.nextDouble());
        }
    }

    public String spin() {
        seed = 100000001;
        //m = 1;
        //n = 100000001;

        String letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        StringBuilder words = new StringBuilder();
        Wheel random = new Wheel(seed, m, n);
        while (words.length() < 10) {
            int index = (int) (random.nextInt() * letters.length());
            words.append(letters.charAt(index));
        }
        String wordMade = words.toString();
        return wordMade;


    }
}

Can't seem to get this to work and I'm not sure why. Any help would be appreciated.