Thread: Can't figure out what's wrong

Question.
The user should input non negative integers, These values must be filled in an array of 10 elements. If the user enters -1, or the array becomes full whatever comes first, the program should terminate. The output should be the value of integers entered by the user in the reverse order.

My Problem:
When I enter -1, the -1 also gets displayed in the array.It should display non negative integers, the -1 is a condition to break out of the loop.
Also if I enter -1, the elements in the array that are not filled display 0. I don't want 0 to be displayed if the value of elements are null.

import java.util.Scanner;
public class whatswrong {
 
 
	public static void main(String[] args) {
                        int array[];
			int i=0, userInput;
			array = new int[10];
 
			Scanner scan = new Scanner (System.in);
 
			while (i <= 10){
			System.out.println("Please enter a positive integer or -1 to quit");
			userInput = scan.nextInt();
			array[i] = userInput;
			i++;
 
			if (i == 10)
				break;
 
			if (userInput < -1)
				i--;
 
			if (userInput == -1)
				break;
		}
			int[] reverse = new int[10];
			int revIndex = 0;
			for (int j = array.length -1 ; j >= 0; j--){
				reverse[revIndex] = array[j];
				revIndex++;
			}
			System.out.println("reverse: ");
			for (int k = 0; k < array.length; k++)
				System.out.println(reverse[k]);
 
 
		}
 
	}