Web Reference: Definition and Usage The isEmpty() method returns true if a list has no items and false otherwise. In addition to implementing the List interface, this class provides methods to manipulate the size of the array that is used internally to store the list. (This class is roughly equivalent to Vector, except that it is unsynchronized.) The size, isEmpty, get, set, iterator, and listIterator operations run in constant time. Jul 11, 2025 · In Java, the isEmpty () method of ArrayList is used to check if an ArrayList is empty. Example 1: Here, we use the isEmpty () method to check whether an ArrayList of integers is empty. Return Type: It returns a boolean value, true if the list is empty, otherwise false.
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