Java - me ayudan

public class Visual2 {

    public static void main(String[] args) {

        int[] array = new int[20];

        int suma = 0;

        for (int i = 0; i < array.length; i++) {

            array[i] = i * 2;

            suma += array[i];

        }

        for (int i = 0; i < array.length; i++) {

            System.out.println(i + ": " + array[i]);

        }

        System.out.println("Suma: " + suma);

    }

}