| Arrays are static in nature. They have fixed length, and their size can’t be changed once created. | ArrayList is dynamic in nature. Its size can be changed dynamically. |
| Arrays can hold both primitives and objects. | ArrayList can only hold objects. |
| Arrays can only be iterated through a for loop or for-each loop. | ArrayList provides iterators to iterate through its elements. |
The size of an array is determined using the length attribute. | The size of an ArrayList is determined using the size() method. |
| Arrays offer constant time performance for both add and get operations. | ArrayList also provides constant time performance for add and get operations, provided the addition of an element doesn’t trigger resize. |
| Arrays do not support generics. | ArrayList supports generics, making it type-safe. |
| Arrays can be multi-dimensional. | ArrayLists can’t be multi-dimensional. |
| Elements are added to an Array using the assignment operator. | Elements are added to an ArrayList using the add() method. |