What are some advanced methods for Java ArrayList?

What are some advanced methods for Java ArrayList?

Java's ArrayList class offers several advanced methods like subList(), retainAll(), and removeIf(). Would you like to know how to use any specific method?

Can you explain how the subList() method works?

Sure! The subList(int fromIndex, int toIndex) method returns a view of the portion of the list between the specified fromIndex, inclusive, and toIndex, exclusive. It allows you to work with a subset of the list.

What about retainAll()? How does that function?

The retainAll(Collection<?> c) method retains only the elements in the ArrayList that are contained in the specified collection. It modifies the list to keep only those elements.

Are there any performance considerations I should be aware of?

Yes, methods like removeIf() and retainAll() can be costly in terms of performance, especially with large lists, as they may require iterating through the entire list.