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Java - wrap array with Iterable interface

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Created by:

Emrys-Li

580

In this short article, we would like to show how to wrap an array with Iterable interface in Java.

Presented approach let's to use Iterable interface on array.

Quick solution:

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import java.util.Arrays;
import java.util.Iterator;
​
public class Program {
​
    public static void main(String[] args) {
​
        Integer[] array = new Integer[] {1, 2, 3};
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        Iterable<Integer> iterable = Arrays.asList(array); // it wraps array with iterable object
        Iterator<Integer> iterator = iterable.iterator();  // iterator access current array state
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        // iterable object only wrapped array, so iterator.next() will return: 4, 5 and 6
        array[0] = 4;
        array[1] = 5;
        array[2] = 6;
​
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        }
    }
}