public class EvenNumberArrays {

    public static void main(String [] args)
    {

        //3)
        System.out.println("How many elements do you want to create for an array list? ");
        java.util.Scanner input = new java.util.Scanner(System.in);
        int length = input.nextInt();
        int[] list = new int[length];

        //4)
        System.out.println("Enter element values and the numbers of value will the same as you entered"
                + " above with the first question. ");
        //5) this is the way to enter each element for the list array.
        for(int i = 0; i < length; i++)
        {
            list[i] = input.nextInt();
        }

        //5) this explains when to call getNumOfEvens() method.
        System.out.println("It is time to call getNumOfEvens() method. ");
        System.out.println("Once you call that method, it will return number of evens");

        //6) actual calling getNumOfEvens() method by passing the array reference variable named list.
        System.out.println(getNumOfEvens(list));


        //7) this is how to call void method with this case.
        getNumOfEvensVoid(list);
    }

    //1) make sure change the original method of getNumberOfEvens to static as below.
    //2) just add static between public and int.
    public static int getNumOfEvens( int[] nums) {
        int count = 0;

        for(int i = 0; i < nums.length; i++)
        {
            if(nums[i] % 2 == 0)
                count++;

        }
        return count;
    }

    public static void getNumOfEvensVoid( int[] nums) {
        int count = 0;

        for(int i = 0; i < nums.length; i++)
        {
            if(nums[i] % 2 == 0)
                count++;

        }
        System.out.println("This arrays have " + count + " even numbers. ");
    }

}