Java Collection Tutorial - Java ArrayDeque.offerFirst(E e)

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Syntax

ArrayDeque.offerFirst(E e) has the following syntax.

public boolean offerFirst(E e)

Example

In the following code shows how to use ArrayDeque.offerFirst(E e) method.

//  w w  w .  j  av a2s .  c  om

import java.util.ArrayDeque;
import java.util.Deque;

public class Main {
   public static void main(String[] args) {
      
      
      Deque<Integer>  deque = new ArrayDeque<Integer> (8);

      
      deque.add(25);
      deque.add(2);
      deque.add(1);
      deque.add(18);        
           
      // this will insert 10 at the front
      deque.offerFirst(10);

      System.out.println(deque);
   }
}

The code above generates the following result.

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