[FIXED] Creating a list of UUIDs for a test in Java

Issue

I want to generate a mock List<UUID> and fill it using random UUID's. However, I am not sure if there is a more proper way instead of the following approach by creating list and adding items.

List<UUID> uuidList = new ArrayList<>();
uuidList.add(UUID.randomUUID());
uuidList.add(UUID.randomUUID());
uuidList.add(UUID.randomUUID());

So, is there a better way?

Solution

You can use Java8 streams here.

List<UUID> uuidList = Stream.generate(UUID::randomUUID)
        .limit(3)
        .collect(Collectors.toList());

This will generate 3 random UUIDs, for more, just change the limit.

Answered By - geobreze