| item | array | ArrayList |
|---|---|---|
| declaration | Integer[] arr; | ArrayList<Integer> al |
| create instance | arr = new Integer[5]; | al = new ArrayList<Integer>(); |
| storing values | arr[0] = 5; arr[1] = 60; arr[0] = 50; |
al.add(5); al.add(60); al.set(0, 50); |
| getting a stored value | int x = arr[0]; | int x = al.get(0); |
| number of elements | int sz = arr.length; | int sz = al.size(); |
| increment a stored value | arr[0] = arr[0] + 1; | al.set(0, al.get(0) + 1); |