Método LinkedBlockingDeque element() en Java

El método element() de LinkedBlockingDeque devuelve el elemento al frente del contenedor. No elimina el elemento en el contenedor. Este método devuelve la cabeza de la cola representada por este deque.

Sintaxis:  

public void element()

Parámetros: Este método no acepta ningún parámetro.

Devoluciones: este método devuelve la cabeza de la cola representada por este deque.

Los siguientes programas ilustran el método element() de LinkedBlockingDeque:

Programa 1:  

// Java Program Demonstrate element()
// method of LinkedBlockingDeque
 
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
 
public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {
 
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<Integer> LBD
            = new LinkedBlockingDeque<Integer>();
 
        // Add numbers to end of LinkedBlockingDeque
        LBD.add(10);
        LBD.add(20);
        LBD.add(30);
        LBD.add(40);
 
        // before removing print queue
        System.out.println("Linked Blocking Deque: " + LBD);
 
        System.out.println("Linked Blocking Deque front element: " +
                                                     LBD.element());
    }
}

Linked Blocking Deque: [10, 20, 30, 40]
Linked Blocking Deque front element: 10

Programa 2: 

// Java Program Demonstrate element()
// method of LinkedBlockingDeque
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
 
public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {
 
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<String> LBD
            = new LinkedBlockingDeque<String>();
 
        // Add numbers to end of LinkedBlockingDeque
        LBD.add("ab");
        LBD.add("cd");
        LBD.add("fg");
        LBD.add("xz");
 
        // before removing print queue
        System.out.println("Linked Blocking Deque: " + LBD);
 
        System.out.println("Linked Blocking Deque front element: " +
                                                     LBD.element());
    }
}

Linked Blocking Deque: [ab, cd, fg, xz]
Linked Blocking Deque front element: ab

Referencia: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedBlockingDeque.html#element()