Consider the following code.

```
List<String> list = new ArrayList<String>();
ArrayAdapter<String> adapter = new ArrayAdapter<String>(context, resource, textViewResourceId, list);

// Method 1 : Add an item.
adapter.add("ITEM1");

// Method 2 : Add an item
list.add("ITEM2");

```

I was wondering, which is the correct way to add item into `ArrayAdapter`? As seems to me, both methods just work fine.