Add element to List
boolean add(E e)- Appends the specified element to the end of this list.
void add(int index, E element)- Inserts the specified element at the specified position in this list (optional operation).
boolean addAll(Collection<? extends E> c)- Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation).
boolean addAll(int index, Collection<? extends E> c)- Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
import java.util.ArrayList;
import java.util.List;
public class Main {
public static void main(String[] args) {
List list = new ArrayList();
list.add("1");
list.add("2");
list.add("3");
list.add("java2s.com");
System.out.println("List has:" + list);
}
}
The output:
List has:[1, 2, 3, java2s.com]