Java ArrayDeque.getFirst()

Syntax

ArrayDeque.getFirst() has the following syntax.

public E getFirst()

Example

In the following code shows how to use ArrayDeque.getFirst() method.


/*  w w  w .  j  av  a2  s.c o m*/
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(3);
      deque.add(2);
      deque.add(1);
      deque.add(18);        
           
      System.out.println(deque);
      
      // getFirst() will retrieve element at first(head) position
      int retval = deque.getFirst();
      System.out.println("Retrieved Element is = " + retval);
   }
}

The code above generates the following result.