Sorry, I should've written this: Iterable<?> whatever = ... StringJoiner joiner = new StringJoiner(", "); whatever.forEach(w -> joiner.add(w.toString())); String s = joiner.toString();
-Pavel On 11 Aug 2014, at 17:17, Pavel Rappo <pavel.ra...@oracle.com> wrote: > Iterable<?> whatever = ... > whatever.forEach(w -> builder.append(w.toString()); > String s = builder.toString();