How can data be sorted in descending order?

In Java, to sort data in descending order, you can use the sort method from the Collections or Arrays class with a comparator that defines the reverse order.

Example of sorting a list of numbers in descending order:

import java.util.*;

public class SortDescending {
    public static void main(String[] args) {
        List<Integer> numbers = Arrays.asList(5, 3, 8, 1, 9);
        // Sorting in descending order
        numbers.sort(Comparator.reverseOrder());
        System.out.println(numbers); // Outputs [9, 8, 5, 3, 1]
    }
}

For arrays, you can use:

Integer[] arr = {5, 3, 8, 1, 9};
Arrays.sort(arr, Comparator.reverseOrder());

If you are sorting objects by some field, you need to implement a corresponding comparator with the reverse order.