Compare two urls and follow redirects

UrlIsSame.java

public static boolean isSame(URL a, URL b, int depth) throws IOException {
    HttpURLConnection conn = (HttpURLConnection) b.openConnection();
    conn.setInstanceFollowRedirects(false);
    conn.connect();
    int d = 0;
    while (conn.getResponseCode() >= 300 && conn.getResponseCode() <= 399 && d < depth) {
        b = new URL(conn.getHeaderField("Location"));
        conn = (HttpURLConnection) b.openConnection();
        conn.setInstanceFollowRedirects(false);
        conn.connect();
        depth++;
    }
    return a.equals(b);
    
}