List add() Method in Java with Examples
This method of List interface is used to append the specified element in argument to the end of the list.
Syntax:
boolean add(E e)
Parameters: This function has a single parameter, i.e, e – element to be appended to this list.
Returns: It returns true if the specified element is appended and list changes.
Below programs show the implementation of this method.
Program 1:
// Java code to show the implementation of// add method in list interfaceimport java.util.*;public class GfG { // Driver code public static void main(String[] args) { List<Integer> l = new ArrayList<>(); l.add(10); l.add(15); l.add(20); System.out.println(l); }} |
Output:
[10, 15, 20]
Program 2: Below is the code to show implementation of list.add() using Linkedlist.
// Java code to show the implementation of// add method in list interface using LinkedListimport java.util.*;public class CollectionsDemo { // Driver code public static void main(String[] args) { List<Integer> ll = new LinkedList<>(); ll.add(100); ll.add(200); ll.add(300); ll.add(400); ll.add(500); System.out.println(ll); }} |
Output:
[100, 200, 300, 400, 500]
Reference:
Oracle Docs
