import org.apache.commons.collections.primitives.IntList;
import org.apache.commons.collections.primitives.ArrayIntList;
public class PrimitiveCollectionsExample {
public static void main(String[] args) {
IntList intList = new ArrayIntList();
intList.add(10);
intList.add(20);
intList.add(30);
for (int i = 0; i < intList.size(); i++) {
System.out.println(intList.get(i));
}
int index = intList.indexOf(20);
int[] array = intList.toArray();
for (int num : array) {
System.out.println(num);
}
}
}
