How to convert int[] into List in Java?

Question

How do I convert int[] into List in Java?

Of course, I\'m interested in any other answer than doing it in a loop, item by it

Answer 1

The best shot:

**
 * Integer modifiable fix length list of an int array or many int's.
 *
 * @author Daniel De Leon.
 */
public class IntegerListWrap extends AbstractList {

    int[] data;

    public IntegerListWrap(int... data) {
        this.data = data;
    }

    @Override
    public Integer get(int index) {
        return data[index];
    }

    @Override
    public Integer set(int index, Integer element) {
        int r = data[index];
        data[index] = element;
        return r;
    }

    @Override
    public int size() {
        return data.length;
    }
}

• Support get and set.
• No memory data duplication.
• No wasting time in loops.

Examples:

int[] intArray = new int[]{1, 2, 3};
List integerListWrap = new IntegerListWrap(intArray);
List integerListWrap1 = new IntegerListWrap(1, 2, 3);