[Java] Parallel scrypt

parallelscrypt.java

for (int i = 0; i < 2; i++) {
    new Thread(new ParallelScrypt(i)).start();
}

static class ParallelScrypt implements Runnable {

    private final int iter;

    public ParallelScrypt(int i) {
        this.iter = i;
    }

    @Override
    public void run() {
        System.out.println(iter + " started");
        long time = System.nanoTime();
        try {
            byte[] digest = SCrypt.generate("asdfgasdfgasdfgasdfg".getBytes("UTF-8"), GPCrypto.
                    randomGen(64), (int) Math.pow(2, 21), 8, 1, 32);
            MessageDigest.isEqual(digest, digest);
        } catch (UnsupportedEncodingException ex) {
            Logger.getLogger(test2.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println(iter + " done in " + (System.nanoTime() - time) / 1e9);
    }
}