ArrayList clear() Method in Java with Examples

The clear() method in the ArrayList class in Java is used to remove all elements from an ArrayList. After calling this method, the list becomes empty.

Example 1: Here, we will use the clear() method to clear elements from an ArrayList of Integers.

[10, 20, 30]
[]

Syntax of clear() Method

public void clear()

• Parameter: The clear() method does not need any parameters.
• Return Type: It does not return any value as it removes all the elements in the list and makes it empty. 

Important Point: It does implement interfaces like Serializable, Cloneable, Iterable, Collection, List, RandomAccess.

Example 2: Here, we will use the clear() method to clear elements from an ArrayList of Strings.

[Dog, Cat, Rabbit]
[]

Example 3: Here, we will use the clear() method to clear elements from an ArrayList of Objects.