Method join

intellijcoder/src/intellijcoder/util/StringUtil.java:11–19

(Collection<String> s, String delimiter)

    public static final char URL_PATH_SEPARATOR = '/';

    public static String join(Collection<String> s, String delimiter) {
        if (s == null || s.isEmpty()) return "";
        Iterator<String> iter = s.iterator();
        StringBuilder builder = new StringBuilder(iter.next());
        while (iter.hasNext()) {
            builder.append(delimiter).append(iter.next());
        }
        return builder.toString();
    }

    public static String getFileName(String url) {
        return url.substring( url.lastIndexOf(URL_PATH_SEPARATOR)+1, url.length() );