Stream Way to get index of first element matching boolean

Question

I have a List. I want to get the index of the (first) user in the stream with a particular username. I don\'t want to actually require the Us

Answer 1

Try This:

IntStream.range(0, users.size())
    .filter(userInd-> users.get(userInd).getName().equals(username))
    .findFirst()
    .getAsInt();