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List add() Method in Java with Examples

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  • Last Updated : 02 Jan, 2019
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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 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);
    }
}

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 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);
    }
}

Output:

[100, 200, 300, 400, 500]

Reference:
Oracle Docs


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