Error message

Hi, I need some help.
I am getting an error message stating "cannot find symbol variable
NotCont" where the arrow is.
Can some one help me with this please.
Thanks ^_^

import java.util.Scanner;
public class IntegerSetTest
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner (System.in);

        System.out.println("Welcome to the Integer Set\n");

     System.out.println("This program is going to find the union " +
     " or intersection of any two sets you enter" +
     "\nPlease enter the number of sets: ");
     int intArray[] = new int[100];
        int value;
     try
     {
     do
     {
     int i;

     value = input.nextInt();
     intArray[i]=value;
     System.out.println("Enter -1 to end: ");
     int NotCont = input.nextInt();
     i++;
---> }while(NotCont != -1);

     for(int i=0; i<intArray.length;i++)
     {
     System.out.println(intArray[i]);
     }
     }
     catch(NumberFormatException ex)
     {
     }
    }
}