How to convert a List<String> into a comma separated string without iterating List explicitly

Question

List<String> ids = new ArrayList<String>();

ids.add("1");

ids.add("2");

ids.add("3");

ids.add("4");

Now i want an output from this list as 1,2,3,4 without explicitly iterating over it.

Answer 1

On Android use:

android.text.TextUtils.join(",", ids);