Join two arrays in Java? [duplicate]

Answer 1

This is more intuitive to write and you don't have to deal with array indexes:

Collection collection = new ArrayList();
collection.addAll(Arrays.asList(healthMessages1));
collection.addAll(Arrays.asList(healthMessages2));

HealthMessage[] healthMessagesAll = collection.toArray(new HealthMessage[] {});

.. but don't ask me about it's performance in contrast to System.arraycopy.