如何对包含字符串数组的数组进行排序？

public class QuickSort {
    public static void quickSort(String[] arr, int low, int high) {
        if (low < high) {
            int pivotIndex = partition(arr, low, high);
            quickSort(arr, low, pivotIndex - 1);
            quickSort(arr, pivotIndex + 1, high);
        }
    }

    public static int partition(String[] arr, int low, int high) {
        String pivot = arr[low];
        while (low < high) {
            while (low < high && arr[high].compareTo(pivot) >= 0) {
                high--;
            }
            arr[low] = arr[high];
            while (low < high && arr[low].compareTo(pivot) <= 0) {
                low++;
            }
            arr[high] = arr[low];
        }
        arr[low] = pivot;
        return low;
    }

    public static void main(String[] args) {
        String[] arr = {"apple", "banana", "orange", "grape", "pear"};
        quickSort(arr, 0, arr.length - 1);
        for (String s : arr) {
            System.out.print(s + " ");
        }
    }
}