Open In App
Related Articles

ArrayDeque add() Method in Java

Improve
Improve
Improve
Like Article
Like
Save Article
Save
Report issue
Report
The Java.util.ArrayDeque.add(Object element) method in Java is used to add a specific element at the end of the Deque. The function is similar to the addLast() method of ArrayDeque in Java. Syntax:
Array_Deque.add(Object element)
Parameters: The parameter element is of the type ArrayDeque and refers to the element to be added to the Deque. Return Value: The function returns True if the element is successfully added into the deque else it returns false. Exceptions: The method throws NullPointerException if the passed parameter is NULL. Below programs illustrate the Java.util.ArrayDeque.add() method: Program 1: Adding String elements into the Deque.
// Java code to illustrate add()
import java.util.*;
  
public class ArrayDequeDemo {
    public static void main(String args[])
    {
        // Creating an empty ArrayDeque
        Deque<String> de_que = new ArrayDeque<String>();
  
        // Use add() method to add elements into the Deque
        de_que.add("Welcome");
        de_que.add("To");
        de_que.add("Geeks");
        de_que.add("4");
        de_que.add("Geeks");
  
        // Displaying the ArrayDeque
        System.out.println("ArrayDeque: " + de_que);
    }
}

                    
Output:
ArrayDeque: [Welcome, To, Geeks, 4, Geeks]
Program 2: Adding Integer elements into the Deque.
// Java code to illustrate add()
import java.util.*;
  
public class ArrayDequeDemo {
    public static void main(String args[])
    {
        // Creating an empty ArrayDeque
        Deque<Integer> de_que = new ArrayDeque<Integer>();
  
        // Use add() method to add elements into the Deque
        de_que.add(10);
        de_que.add(15);
        de_que.add(30);
        de_que.add(20);
        de_que.add(5);
  
        // Displaying the ArrayDeque
        System.out.println("ArrayDeque: " + de_que);
    }
}

                    
Output:
ArrayDeque: [10, 15, 30, 20, 5]


Last Updated : 10 Dec, 2018
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads