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:

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// Java code to show the implementation of
// add method in list interface
import 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);
    }
}

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Output:


[10, 15, 20]





Program 2: Below is the code to show implementation of list.add() using Linkedlist.











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// Java code to show the implementation of 


// add method in list interface using LinkedList 


import 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); 


    } 


} 



















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Output:


[100, 200, 300, 400, 500]





Reference: 

Oracle Docs



          
          
          
          

            

    

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