[FIXED] How do I continue with next element in the Java Stream in case of exception?

Issue

I have a stream like this,

List<String> test = Arrays.asList("1", "2,", "3");

test.stream().map(t -> {
  try {
    validate(t);
  } catch (Exception e) {
    throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, e.getMessage(), e);
  }

  return true;
})

In case of an exception, I would like to store it somewhere, process the next element and then show all exceptions at once. Is this possible?

Solution

Well, don't rethrow the exception:

var exceptions = test.stream().map(t -> {
    try {
      validate(t);
    } catch (Exception e) {
      return e;
    }

    return null;
  })
    .filter(Objects::nonNull) // if you don't need to preserve the index
    .toList();

Answered By - xehpuk
Answer Checked By - David Marino (JavaFixing Volunteer)