The CopyOnWriteArraySet class in Java is a part of the Java Collections Framework and implements the Set interface. It is a thread-safe variant of HashSet where all mutative operations (add, set, remove, etc.) are implemented by making a fresh copy of the underlying array. This class is best suited for applications in which set sizes generally stay small, read-only operations vastly outnumber mutative operations, and you need to prevent any kind of interference among threads.
This guide covers various methods available in the CopyOnWriteArraySet class, offering a comprehensive understanding of how to manipulate and interact with this set in Java. These methods are crucial for efficient coding practices and help in performing operations like adding, removing, and checking for elements.
For more detailed information, you can refer to the official Java SE Documentation and additional resources on Java Collections Tutorial.
CopyOnWriteArraySet Class Methods
| Method | Description |
|---|---|
| add() | Adds an element to the CopyOnWriteArraySet if it is not already present. |
| remove() | Removes a specified element from the CopyOnWriteArraySet. |
| contains() | Checks if the CopyOnWriteArraySet contains a specified element. |
| size() | Returns the number of elements in the CopyOnWriteArraySet. |
| isEmpty() | Checks if the CopyOnWriteArraySet is empty. |
| clear() | Removes all elements from the CopyOnWriteArraySet. |
| iterator() | Returns an iterator over the elements in the CopyOnWriteArraySet. |
| addAll() | Adds all elements from another collection to the CopyOnWriteArraySet. |
| toArray() | Returns an array containing all elements in the CopyOnWriteArraySet. |
| containsAll() | Checks if the CopyOnWriteArraySet contains all elements from another collection. |
| removeAll() | Removes all elements that are also in another collection from the CopyOnWriteArraySet. |
| retainAll() | Keeps only the elements that are also in another collection in the CopyOnWriteArraySet. |
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