To sort a List in Java, you can use the sort method of the List interface and pass it a comparator that defines the sort order.
Here's an example of how you can do this:
List<String> list = Arrays.asList("apple", "banana", "cherry");
list.sort(Comparator.naturalOrder());
System.out.println(list);
This code will sort the elements of the List in natural order (ascending order for strings) and print the sorted list to the console. The output will be:
[apple, banana, cherry]
You can customize the comparator to sort the elements based on different criteria, such as the length of the strings or the reverse order. For example, to sort the elements in descending order, you can use the reverseOrder method of the Comparator class:
List<String> list = Arrays.asList("apple", "banana", "cherry");
list.sort(Comparator.reverseOrder());
System.out.println(list);
This code will sort the elements in reverse order, and the output will be:
[cherry, banana, apple]
If the List is already sorted and you just want to reverse the order of the elements, you can use the reverse method of the Collections class:
List<String> list = Arrays.asList("apple", "banana", "cherry");
Collections.reverse(list);
System.out.println(list);
This code will reverse the order of the elements in the List, and the output will be:
[cherry, banana, apple]