Method join

src/main/java/Util.java:95–106

(String[] strings, String sep, String prefix, String suffix)

    }

    public static String join(String[] strings, String sep, String prefix, String suffix) {
        final StringBuilder sb = new StringBuilder();
        boolean first = true;
        for (String s : strings) {
            if (! first) sb.append(sep);
            if (prefix != null) sb.append(prefix);
            sb.append(s);
            if (suffix != null) sb.append(suffix);
            first = false;
        }
        return sb.toString();
    }

    public static String join(String[] strings, String sep) {
        final StringBuilder sb = new StringBuilder();