University exercise done in 3min

import javax.swing.*;

interface IterateOver
{
    public void iterate(int i);
}

class ModuloEmatrizes
{
    int[] anyArray = new int[5];
    int sum = 0;
    int productory = 1;

    public ModuloEmatrizes()
    {
        this.readValues();
    }

    public static void main(String[] args)
    {
        ModuloEmatrizes obj = new ModuloEmatrizes();
        obj.calcSum();
        obj.calcProd();

        obj.showUserResult();

        System.exit(1);
    }

    public void readValues()
    {
        this.loooop(
            (i) ->  {
                this.anyArray[i] = Integer.parseInt(
                    JOptionPane.showInputDialog("Input a number " + i)
                );
            }
        );
    }

    public void calcSum()
    {
        this.loooop(
            (i) -> {
                this.sum += this.anyArray[i];
            }
        );
    }

    public void calcProd()
    {
        this.loooop(
            (i) -> {
                this.productory *= this.anyArray[i];
            }
        );
    }

    public void loooop(IterateOver obj)
    {
        for (int i = 0; i <= this.anyArray.length - 1; i++)
        {
            obj.iterate(i);
        }
    }

    public void showUserResult()
    {
        JOptionPane.showMessageDialog(
            null,
            "Result:\n\nSum: " + this.sum +
            "\nProductory: " + this.productory
        );

    }
}