Remove() Method : Java.util.ArrayDeque

Declaration :

public E remove()

1	public E remove()

Explanation :

Purpose	The java.util.ArrayDeque.remove() method retrieves and removes the head of the queue represented by this deque.
Parameters	NA
Return Value	This method returns the head of the queue represented by this deque.
Exception	NoSuchElementException — if this deque is empty.

Java Program : Example

Below example will explain java.util.ArrayDeque.remove() method.

package com.c4learn;
import java.util.ArrayDeque;
import java.util.Deque;
public class ArrayDequeDemo {
   public static void main(String[] args) {
      // Create empty array deque with an initial capacity
      Deque<Integer> deque = new ArrayDeque<Integer>(8);
      // Use add() method to add elements
      deque.add(100);
      deque.add(200);
      deque.add(300);
      deque.add(400);        
      deque.add(500);        
      System.out.println("Deque before : " + deque);
      // Remove elements using remove
      int val = deque.remove();
      System.out.println("Element removed is : " + val);
      System.out.println("Deque after  : " + deque);
   }
}

package com.c4learn;

import java.util.ArrayDeque;

import java.util.Deque;

public class ArrayDequeDemo {

public static void main(String[] args) {

// Create empty array deque with an initial capacity

Deque<Integer> deque = new ArrayDeque<Integer>(8);

// Use add() method to add elements

deque.add(100);

deque.add(200);

deque.add(300);

deque.add(400);

deque.add(500);

System.out.println("Deque before : " + deque);

// Remove elements using remove

int val = deque.remove();

System.out.println("Element removed is : " + val);

System.out.println("Deque after : " + deque);

}

Output of Program :

Deque before : [100, 200, 300, 400, 500]
Element removed is : 100
Deque after  : [200, 300, 400, 500]

Deque before : [100, 200, 300, 400, 500]

Element removed is : 100

Deque after : [200, 300, 400, 500]