I am getting NZEC error. help pls??

import java.util.Scanner;
class QuickSort
{
/* Quick Sort function /
public static void sort(int[] arr)
{
quickSort(arr, 0, arr.length - 1);
}
/
Quick sort function */
public static void quickSort(int arr[], int low, int high)
{
int i = low, j = high;
int temp;
int pivot = arr[(low + high) / 2];

    /* partition */
    while (i <= j) 
    {
        while (arr[i] < pivot)
            i++;
        while (arr[j] > pivot)
            j--;
        if (i <= j) 
        {
            /* swap */
            temp = arr[i];
            arr[i] = arr[j];
            arr[j] = temp;

            i++;
            j--;
        }
    }

    /* recursively sort lower half */
    if (low < j)
        quickSort(arr, low, j);
    /* recursively sort upper half */
    if (i < high)
        quickSort(arr, i, high);
}
/* Main method */
public static void main(String[] args) 
{
    Scanner scan = new Scanner( System.in );        
    System.out.println("Quick Sort Test\n");
    int n, i;
    /* Accept number of elements */
    System.out.println("Enter number of integer elements");
    n = scan.nextInt();
    /* Create array of n elements */
    int arr[] = new int[ n ];
    /* Accept elements */
    System.out.println("\nEnter "+ n +" integer elements");
    for (i = 0; i < n; i++)
        arr[i] = scan.nextInt();
    /* Call method sort */
    sort(arr);
    /* Print sorted Array */
    System.out.println("\nElements after sorting ");        
    for (i = 0; i < n; i++)
        System.out.print(arr[i]+" ");            
    System.out.println();            
}    

}

//