Java list.sort() Method Explained

In Java, the list.sort() method is used to sort elements in a list. It uses the natural order of elements if they implement the Comparable interface, or a specified comparator for sorting.

Specifically, the list.sort() method will sort the elements in the list in place, meaning it will modify the original list instead of creating a new sorted list. After sorting, the elements in the list will be arranged in ascending order.

If the elements in the list implement the Comparable interface, the sort() method will use the compareTo() method of the elements to compare their order. If the elements in the list do not implement the Comparable interface, the sort() method will throw a ClassCastException.

If you need to use custom comparison logic to sort elements in a list, you can use the List.sort(Comparator c) method and pass a comparator as a parameter. A comparator is a class that implements the Comparator interface and defines the logic for comparing two elements.

In conclusion, the purpose of the list.sort() method is to sort the elements in a list either using their natural order or a custom comparator. After sorting, the elements in the list will be arranged in ascending order.