Initialize array of primitives
There is none, they produce exactly the same bytecode. I think it may be that the second form wasn't supported in older versions of Java, but that would have been a while back.
That being the case, it becomes a matter of style, which is a matter of personal preference. Since you specifically asked, I prefer the second, but again, it's a matter of personal taste.
As others have mentioned, they are equivalent and the second option is less verbose. Unfortunately the compiler isn't always able to understand the second option:
public int[] getNumbers() { return {1, 2, 3}; //illegal start of expression}In this case you have to use the full syntax:
public int[] getNumbers() { return new int[]{1, 2, 3};}