Convert int[] to comma-separated string

Question

How can I convert int[] to comma-separated String in Java?

int[] intArray = {234, 808, 342};

Result I want:

\"         


        

Answer 1

Here's a stream version which is functionally equivalent to khelwood's, yet uses different methods.

They both create an IntStream, map each int to a String and join those with commas.

They should be pretty identical in performance too, although technically I'm calling Integer.toString(int) directly whereas he's calling String.valueOf(int) which delegates to it. On the other hand I'm calling IntStream.of() which delegates to Arrays.stream(int[]), so it's a tie.

String result = IntStream.of(intArray)
                         .mapToObj(Integer::toString)
                         .collect(Collectors.joining(", "));