ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

How to calculate and print fibonacci series on the console through a Java program

Updated on September 17, 2014

The code which I am about to share with you is a Java snippet which prints Fibonacci series on the console of your command line. It reads number of terms from console. After calculating Fibonacci series, it prints result on the console. In this simple program, there is a class named as 'FibonacciSeriesDemo'. It contains method named as 'public static void main(String [] args)'. This method is been called internally by Java Virtual Machine. It is static and public in nature. It does not return any value. It’s entry point for any Java program to execute. Here is the code :

import java.util.Scanner;

class Fibonacci {
	public void fibonacci( int terms ) {

		// 4. Creating two variable for 
		// storing first two values of fibonacci 
		// series, that is 0 and 1
		int firstNumber = 0;
		int secondNumber = 1;

		// 5. Looping through each terms and printing 
		// value of number 1
		for (int i = 0; i < terms; i++ ) {
			System.out.println(firstNumber + " ");

			// 6. storing number 2 in temp so that on next term
			// added value should be displayed which outputs to 
			// number 1 + number 2
			int temp = secondNumber;
			secondNumber= secondNumber+ firstNumber;
			firstNumber = temp;

		}	
	}
}

public class FibonacciSeriesDemo {

	public static void main(String[] args) {

		// 1. We will be creating an object Scanner class.
		// This object will be created by passing System.in
		// object to it. It will be responsible for reading
		// values from the console which user enter
		Scanner scanner = new Scanner(System.in);

		System.out.println("Enter number of terms for fibonacci series ");

		// 2. Storing the number of terms entered by user in a variable
		// terms by calling nextInt method of Scanner which reads a value
		// from the console 
		int terms = scanner.nextInt();

		// 3. Creating a Fibonacci object and calling
		// fibonacci method by passing terms as a parameter
		Fibonacci fibonacci = new Fibonacci();
		fibonacci.fibonacci(terms);

	}

}

Steps to implement

Step 1 :- Create an object of Scanner class. This object will be created by passing System.in as an argument to constructor. It will be responsible for reading values from the console which user enter.

Step 2 : - Storing the number of terms entered by user in a variable terms by calling nextInt method of Scanner which reads a value from the console.

Step 3 :- Creating a Fibonacci object and calling fibonacci method by passing terms as a parameter.

Step 4 :- Creating two variable for storing first two values of fibonacci series, that is 0 and 1.

Step 5 :- Looping through each terms and printing value of number 1.

Step 6 :- Storing number 2 in temp so that on next term added value should be displayed which outputs to number 1 + number 2.


In order to make this tutorial more understandable, I am providing a video tutorial for it below. This video tutorial will give you a walk through for all the steps performed in above java code.

In this video fibonacci series is calculated and displayed on the console.

How to print Fibonacci series on the console ?.

Output of the program -

Best Programming Language

Which is best programming language ?.

See results

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)