Clean way to initialize an arraylist

Question

I want an Arraylist in Java, which I want to fill with 10's

ArrayList<Integer> list = new ArrayList<Integer>(100);
for (int i = 0; i < 100; i++) {
    list.add(10);
}

I'm going to have to initialize a lot of Arraylists, so I was wondering if there is there a clean way to do this without a for loop?

Answer 1

You can use Collections.nCopies:

ArrayList<Integer> list = new ArrayList<Integer>(Collections.nCopies(100, 10));

This will initialize list with 100 10's.