Sort an Array in Descending (Reverse) Order – Java

The previous tutorial was all about sorting an array in ascending order. In this post we are going to learn how to sort an array in Descending (Reverse) Order.

Example

Here we have two arrays, one is integer array and another one is String array. We are sorting both the arrays in reverse order.

import java.util.Arrays;
import java.util.Collections;
class SortArrayExample {
 
  public static void main(String[] args) {
    // int Array
    Integer[] intArray = new Integer[] {
        new Integer(15),
        new Integer(9),
        new Integer(16),
        new Integer(2),
        new Integer(30)
    };

    // Sorting int Array in descending order
    Arrays.sort(intArray, Collections.reverseOrder());
 
    // Displaying elements of int Array
    System.out.println("Int Array Elements in reverse order:");
    for (int i = 0; i < intArray.length; i++)
       System.out.println(intArray[i]);
 
    // String Array
    String[] stringArray = 
       new String[] { "FF", "PP", "AA", "OO", "DD" };

    // Sorting String Array in descending order
    Arrays.sort(stringArray, Collections.reverseOrder());

    // Displaying elements of String Array
    System.out.println("String Array Elements in reverse order:");
    for (int i = 0; i < stringArray.length; i++)
       System.out.println(stringArray[i]);
  }
}

Output:

Int Array Elements in reverse order:
30
16
15
9
2
String Array Elements in reverse order:
PP
OO
FF
DD
AA