Java Deque element() Method

The element() method of Java Deque Interface retrieves but not remove the head of the queue which is represented by the deque. The above method differs from the peek only in one way that it throws an exception only if the deque is empty.

Specified by:

element in interfaceQueue<E>

Syntax:

Parameter:

N.A.

Return:

The above method returns the head of the deque represented by the given deque.

Throw:

NoSuchElementException- if the given deque is emplty.

Example 1

import java.util.ArrayDeque;
import java.util.Deque;
public class JavaDequeelementExample1 {
     public static void main(String[] args) {
    	 Deque<String> deque = new ArrayDeque<>();
			deque.add("FAT");
			deque.add("CAO");
			deque.add("JAVA");
			deque.add("DBMS");
			System.out.println("The final queue is : "+deque);
			String val = deque.element();
	   	System.out.println("The required answer : "+val);    		 
	}
}

Test it Now

Output:

The final queue is : [FAT, CAO, JAVA, DBMS]
The required answer : FAT

Example 2

import java.util.ArrayDeque;
import java.util.Deque;
public class JavaDequeelementExample2 {
   public static void main(String[] args) {
		Deque<Character> deque = new ArrayDeque<>();
		System.out.println("The list of the elements is given as : ");
		deque.add('k');
		deque.add('p');
		deque.add('m');
		deque.add('t');
		System.out.println(deque);
		Character val = deque.element();
	   	System.out.println("The required answer : "+val);    
	}
}

Test it Now

Output:

The list of the elements is given as : 
[k, p, m, t]
The required answer : k

Example 3

import java.util.ArrayDeque;
import java.util.Deque;
public class JavaDequeelementExample3 {
   public static void main(String[] args) {
		Deque<Integer> deque = new ArrayDeque<>();
		System.out.print("The list of the elements is given as : ");
		deque.add(2);
		deque.add(3);
		deque.add(4);
		deque.add(5);
		System.out.println(deque);
		Integer val = deque.element();
	   	System.out.println("The required answer : "+val);    
	}
}

Test it Now

Output:

The list of the elements is given as : [2, 3, 4, 5]
The required answer : 2

Next TopicJava Deque

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}