import org.apache.commons.lang.ArrayUtils; public class ArrayProcessingExample { public static void main(String[] args) { int[] numbers = {1, 2, 3, 4, 5}; } } import org.apache.commons.collections.primitives.IntList; import org.apache.commons.collections.primitives.ArrayIntList; import java.util.List; public class CollectionProcessingExample { public static void main(String[] args) { intList.add(2); intList.add(3); } }