How do you remove an item from an ArrayList object?

Answer: In Java, you can remove an item from an ArrayList object using the remove() method. The remove() method has two variants: 1. `remove(int index)`: Removes the element at the specified position from the list. 2. `remove(Object o)`: Removes the first occurrence of the specified element from the list. For example, if we have an ArrayList of names like `{"Alice", "Bob", "Charlie", "David"}`, you could remove "Bob" using the first variant by calling `names.remove(1)` which removes the element at index 1, and you could remove "Alice" using the second variant by calling `names.remove("Alice")` which removes the first occurrence of the "Alice" object. After both removals, the resulting ArrayList would contain `{"Charlie", "David"}`.