carlosmaniero

interface TouchCallback {
    public void apply(int times);
}

class TouchMe {
    private int times = 0;
    private TouchCallback onTouch;

    TouchMe(TouchCallback onTouch) {
        this.onTouch = onTouch;

carlosmaniero

public class Sum {
    public static void main(String args[]) {
        int[] array = new int[]{1, 2, 3, 4, 5};
        int sum = 0;

        for (int item: array) {
            sum += item;
        }

        System.out.println(sum);

carlosmaniero

import java.util.Arrays;

public class StreamForEach {
    public static void main(String args[]) {
        int[] array = new int[]{1, 2, 3, 4, 5};

        Arrays.stream(array)
                .forEach(item -> System.out.println("item: " + item));
    }
}

carlosmaniero

import java.util.Arrays;

public class StreamSum {
    public static void main(String args[]) {
        int[] array = new int[]{1, 2, 3, 4, 5};

        int sum = Arrays.stream(array).sum();
        System.out.println(sum);
    }
}