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Java ArrayDeque element() Method with Example

ArrayDeque Class element() method: Here, we are going to learn about the element() method of ArrayDeque Class with its syntax and example.
Submitted by Preeti Jain, on January 09, 2020

ArrayDeque Class element() method

  • element() Method is available in java.lang package.
  • element() Method is used to retrieve the first element of the deque but without removing the element from this deque.
  • element() Method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • element() Method may throw an exception at the time of retrieving element.

  • NoSuchElementException: This exception may throw when the deque is “blank” (i.e. Deque contains no elements).

Syntax:

    public T element();

Parameter(s):

  • It does not accept any parameter.

Return value:

The return type of the method is T, it returns first element of this deque.

Example:

// Java program to demonstrate the example // of T element() method of ArrayDeque import java.util.*; public class ElementOfArrayDeque { public static void main(String[] args) { // Creating an ArrayDeque with initial capacity of // storing elements ArrayDeque < String > d_queue = new ArrayDeque < String > (10); // By using add() method to add elements // in ArrayDeque d_queue.add("C"); d_queue.add("C++"); d_queue.add("Java"); d_queue.add("Php"); d_queue.add("DotNet"); // Display Deque Elements System.out.println("d_queue : "); System.out.println("ArrayDeque Elements = " + d_queue); System.out.println(); // By using element() method is to return the // first element of ArrayDeque String ele = d_queue.element(); System.out.println("d_queue.element() : " + ele); } }

Output

d_queue : 
ArrayDeque Elements = [C, C++, Java, Php, DotNet]

d_queue.element() : C


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