LinkedBlockingDeque element() method in Java

The element() method of LinkedBlockingDeque returns the element at the front the container. It does not deletes the element in the container. This method returns the head of the queue represented by this deque.

Syntax:

public void element()

Parameters: This method does not accepts any parameter.



Returns: This method returns the head of the queue represented by this deque.

Below programs illustrate element() method of LinkedBlockingDeque:

Program 1:

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// 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());
    }
}

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Output:

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

Program 2:

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// Java Program Demonstrate contains()
// 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());
    }
}

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Output:

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

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



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