Here’s an example code snippet that demonstrates how to check if an array is sorted in descending order in Java:

public class Main {
    public static boolean isSortedDescending(int[] arr) {
        for (int i = 1; i < arr.length; i++) {
            if (arr[i] > arr[i - 1]) {
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) {
        int[] arr1 = {5, 4, 3, 2, 1};
        int[] arr2 = {1, 2, 3, 4, 5};

        System.out.println("arr1 is sorted in descending order: " + isSortedDescending(arr1));
        System.out.println("arr2 is sorted in descending order: " + isSortedDescending(arr2));
    }
}

Output:

arr1 is sorted in descending order: true
arr2 is sorted in descending order: false

In the code above, the isSortedDescending method checks each element in the array starting from the second element (arr[i]) and compares it with the previous element (arr[i - 1]). If arr[i] is greater than arr[i - 1], it means the array is not sorted in descending order, so the method returns false. If the loop completes without finding any out-of-order elements, the method returns true, indicating that the array is sorted in descending order.

You can use this code snippet to check if any given array is sorted in descending order in your Java programs.