Java Collections.sort() Explained

The Collections.sort() method in Java is used to sort elements in a collection. This is done by implementing either the Comparable interface or the Comparator interface. When the Collections.sort() method is called, the elements in the collection are sorted and the order of the elements in the collection is changed.

If the elements in the collection implement the Comparable interface, the Collections.sort() method will sort them according to their own comparison rules. If the elements in the collection do not implement the Comparable interface, you can specify the sorting rules by passing in a Comparator object.

The Collections.sort() method makes it easy to sort elements in a collection, allowing for custom sorting rules. The sorted collection can be used in various scenarios that require ordered data, such as searching and iterating.