java random string list generator example with streams

TestRandomStringGenerator.java

import java.util.List;
import java.util.Random;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;

class TestRandomStringGenerator {
    private static Supplier<String> randomDischargeId = () -> RandomStringUtils.randomConsonant(8);

    public static void main(String[] args) {
        List<String> collect = Stream.generate(randomDischargeId).limit(100).collect(Collectors.toList());
        System.out.println(collect);
    }
}


class RandomStringUtils {

    private static final String CONSONANT = "BCDFGHJKLMNPQRSTVWXYZ";
    private static Random random = new Random();

    public static String randomConsonant(int len) {
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            sb.append(CONSONANT.charAt(random.nextInt(CONSONANT.length())));
        }
        return sb.toString();
    }
}