Vfrdtyky

Currently, for my university project, we have to simulate a lottery system, or "euro millions" for that we are given two default classes: the key class and the iterator class. We cannot change them in any way.

I wanted to compare the values from the key iterator to an array of scanned integers, returning a number of matches found. The problem is that whenever i insert those numbers the iterator goes out of bounds, and as such I cannot compare both.
Here is what I tried to do, with the numbers (there are 5 numbers and 2 stars - like euromillions):

    public int compareNums() {                          

    int n = 0;

    int numberOfMatches = 0;



    It2Storage.reinitialize();



    while (n < 5) {

        if (It2Storage.hasNextInt() && It2Storage.nextInt() == numArray[n]) {

            numberOfMatches++;

            n++;

            It2Storage.reinitialize();

        }else if (((It2Storage.hasNextInt()) && (It2Storage.nextInt() != numArray[n]))){

            System.out.print(It2Storage.nextInt());

        }



            n++;

            It2Storage.reinitialize();  



        }

    return numberOfMatches;

    }

The It2Storage is a copy of an Iterator containing the values of the numbers array of the key class.
The NumArray is the Array containing all scanner input numbers.
The if states that the Iterator should only go to the next Integer if it has a next Integer. However, I do not see that happening.

Here is the default Iterator Class and Key class.
Iterator:

public class IteratorInt {



private int countNumbers,currNumber;

private int  numbers;





public IteratorInt(int numbers) {

    countNumbers=numbers.length;

    currNumber=0;

    this.numbers=numbers;

}

/ 

public IteratorInt(int numbers, int nElems) {

    countNumbers=nElems;

    currNumber=0;

    this.numbers=numbers;

}



public boolean hasNextInt() {

    return currNumber < countNumbers;

}



public int nextInt() {

    return numbers[currNumber++];

}





public void reinitialize() {

    currNumber=0;

}   

}

And here is the Key

public class Key {



private static final int NUMBERGAMES =10;





private static final int NUMBERS = {{4,5,28,50,11},{4,8,18,44,13},{1,2,28,48,49},{2,15,22,33,11},{10,20,30,50,40},{4,15,21,32,11},{2,5,18,20,11},{6,7,28,50,14},{1,5,33,50,11},{4,6,28,45,10}};





private static final int STARS = {{4,5},{4,6},{4,10},{9,10},{1,5},{6,7},{1,11},{5,8},{9,10},{1,12}};





private static  int CURRENTGAME=0;





private int idGame;





public Key() {

    idGame=CURRENTGAME;

    CURRENTGAME= ++CURRENTGAME % NUMBERGAMES;

}





public IteratorInt criaIteratorNumbers() {        //creates numbers iterator

    return new IteratorInt(NUMBERS[idGame]);

}





public IteratorInt criaIteratorStars() {            //creates stars iterator

    return new IteratorInt(STARS[idGame]);

}   

}

I created a key in my game class and created Iterators for the stars and numbers, both of which I stored in the form of the Iterator Variables It1Storage and It2Storage.
In order to compare the inserted numbers to the numbers of the key, should I continue using my method but modify it, or take a different approach?