Posted in Hadoop Tutorial

Hadoop Tutorial for Beginners – JavaTpoint

What is Hadoop:  Hadoop is an open-source framework that allows to store and process big data in a distributed environment across clusters of computers using simple programming models.  Hadoop is written in Java and is not OLAP (online analytical processing).

Hadoop Tutorial for Beginners

It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. It was based on the same concept – storing and processing data in a distributed, automated way so that relevant web search results could be returned faster.

It is being used by Facebook, Yahoo, Google, Twitter, LinkedIn and many more. Moreover it can be scaled up just by adding nodes in the cluster.

What is Bigdata ?

Bigdata is high-volume, high-velocity and/or high-variety information assets that demand cost-effective, innovative forms of information processing that enable enhanced insight, decision making, and process automation.

Today, Hadoop’s framework and ecosystem of technologies are managed and maintained by the non-profit Apache Software Foundation (ASF), a global community of software developers and contributors.

Modules of Hadoop :

  • HDFS : Hadoop Distributed File System  is suitable for the distributed storage and processing.
  • Yarn :  Yet Another Resource Negotiator is used for job scheduling and manage the cluster.
  • Map Reduce : MapReduce is a processing technique and a program model for distributed computing based on java.
  • Hadoop Common : It refers to the collection of common utilities and libraries that support other Hadoop modules.

Why is Hadoop important?

There are many advantage of Hadoop are follow:

  • Ability to store and process huge amounts of any kind of data, quickly.
  • Fault tolerance. Data and application processing are protected against hardware failure.
  • Flexibility 
  • Low cost
  • Scalability



Posted in Node.Js

Node.Js Tutorial for beginners – javatpoint

JavaTpoint Provides a Online Free Node.Js Tutorial for beginners and Professionals. we covers a Basic and Advance topics of node.js. we will discuss the following topics in Node.js tutorial are as follow-

  • What is Node.js | Introduction to Node.js?
  • History of Node.js
  • Why do use Node.Js?
  • What is main Features of Node.Js?



What is Node.js

Node.js is a server side platform built on Google Chrome’s JavaScript Engine (V8 Engine). Node.js was developed by Ryan Dahl in 2009 and its latest version is v0.10.36.

Node.js is an open source, cross-platform runtime environment for developing server-side and networking applications. Node.js applications are written in JavaScript, and can be run within the Node.js runtime on OS X, Microsoft Windows, and Linux.

History of Node.js :

  • First Published in 2009 by Ryan Dahl .
  • Inspired by File upload bar on Flickr.
  • Npm introduced in 2011.
  • Microsoft Partnered with joyent in 2011 tp provides a native windows version.


Advantages of Node.js :

There are some Important advantage of Node.js are as follow:

  1. Very Fast Being built on Google Chrome’s V8 JavaScript Engine, Node.js library is very fast in code execution.
  2. No Buffering – Node.js applications never buffer any data. These applications simply output the data in chunks.
  3. Single Threaded but Highly Scalable – Node.js uses a single threaded model with event looping. Event mechanism helps the server to respond in a non-blocking way and makes the server highly scalable as opposed to traditional servers which create limited threads to handle requests.
  4. Open source: Node.js has an open source community which has produced many excellent modules to add additional capabilities to Node.js applications.

Application of Node.js :

  1. Real Time Chat Application
  2. Upload a Huge Amount of Data
  3. Data Streaming Application
  4. Control robots and Drown through WLAN
  5. Distributed, Clustered system and Embeded System


Posted in Education

What is CGPA in CBSE? How can calculate CGPA?-

What is CGPA? Full form of CGPA?

CGPA Stands for  Cumulative Grade Point Average (CGPA). It is an Educational grading System. It is the average of Grade Points obtained in all the subjects excluding additional 6th subject as per Scheme of Studies. CBSE follows the Cumulative Grade Point Average (CGPA) system for grading its students in secondary level under the newly introduced scheme of Continuous and Comprehensive Evaluation in its schools in a phased manner.

How to calculate percentage from CGPA?

Multiply the CGPA with 9.5 or use the above calculator to get the overall indicative percentage.

Why multiply with 9.5 only?

The Board took the result of the last five years and calculated the average marks of all candidates who had scored between 91 and 100. That average turned out to be close to 95 marks. Since the equivalent Grade Point for the 91-100 band (A1 grade) of marks is 10, it then divided the average result of 95 by 10. The result is 9.5.

For Example:

Though your CGPA is written on the report card, it is easy to calculate it on your own. Here’s how you can do it.
Add your grade points in the main five subjects, and then divide it by 5.
For example, if your grade points for the five main subjects are:

Subject 1: 9;Subject 2: 9; Subject 3: 8; Subject 4: 9; and Subject 5: 9

Step 1: Add the grade points:  Total = 9+9+8+9+9 = 44
Step 2: Divide it by 5
CGPA= 44/5 = 8.8
So, your CGPA is 8.8.
It is now important to understand your result in terms of percentage to evaluate your performance.

Calculating percentage from your CGPA
In order to convert your overall CGPA into percentage, multiply it by 9.5.
In this case 8.8 (CGPA) is multiplied by 9.5, so 8.8 x 9.5 = 83.60%

Total Percentage Get = 83.60%

Posted in XML

What is Xml? | Features of XML – JavaTpoint

Introduction to XML :  XML is a software- and hardware-independent tool for storing and transporting data.  A markup language is a mechanism to identify structures in a document.

What is XML :  The XML specification defines a standard way to add markup to documents.

  • XML stands for eXtensible Markup Language
  • XML is a markup language much like HTML
  • XML is designed to store and transport data
  • XML is not a replacement for HTML
  • XML is designed to carry data, not to display data
  • XML was designed to be self-descriptive


Features of XML:  

XML is widely used in the era of web development. It is also used to simplify data storage and data sharing.

The main features or advantages of XML are given below.

  • XML is heavily used as a format for document storage and processing, both online and offline.
  • Content-based XML markup enhances searchability, making it possible for agents and search engines to categorize data instead of wasting processing power on context-based full-text searches.
  • XML does not allow References to external data entities. Named character references are not allowed in XML. XML does not allow empty comment declaration.
  • XML is extensible, because it only specifies the structural rules of tags. No specification on tags them self.
  • XML data can be stored in separate XML files.
  • XML easier to create data that can be shared by different applications.


Posted in Html Tutorial

What is Html5? | Introduction to Html Tutorial –

Html Tutotrial -  javatpointIntroduction To Html 5 Tutorial– JavaTpoint

Html 5 is the standard Programming Language for depicting substance and appearance site pages. Its center points have been to enhance the dialect with backing for the most recent interactive media while keeping it effortlessly clear by people and reliably saw by machines and gadgets.

History Versions of Html:

Html is likewise a potential contender for cross-stage versatile applications. Numerous peculiarities of Html5 have been manufactured with the attention of having the capacity to run on low-controlled gadgets, for example, cell phones and tablets. In December 2011, examination firm Strategy Analytics estimate offers of Html5 perfect telephones would best 1 billion in 2013.
The primary web program, Mosaic, was presented in 1993. After a year Netscape, in light of Mosaic, was acquainted and the net started with get to be prominent. HTML was utilized as a part of both programs, however there was no “standard” HTML until the presentation of HTML 2.0.
HTML 2.0 was initially distributed in 1995.* HTML 3.0 was distributed after two years and 4.01 two years after that. HTML 4.01 has been the work stallion of the net since the time that. The primary “working draft” of Html5 turned out in January of 2008 and it as of now has shockingly expansive program help. However Html5 is not yet completely actualized and won’t be for a few years yet.

There are any number of arranging advisory groups that have arrangements to make it a “Proposal”, however such plans are still in the arranging stage – and don’t  anticipate that changing at whatever time soon.

JavaTpoint Provides the Html 5 Tutorial in details now you can learned by this tutorial What is HTML?, Html Tags, Html formatting, Html Table, Html5 Tags, Html Multimedia, Html canvas.

Html Tags: we are going to introduces about html tags in briefly.

There are three types of html tags are as follow-

  1. Opening tag
  2. Content tag
  3. Close tag


<Opening tag> Content <Close tag>

Html tag Example:

<p>Paragraph Tag</p>

<h2>Heading Tag</h2>

<b>Bold Tag</b>

<i>Italic Tag</i>

<u>Underline Tags</u>

Unclosed Html Tag:

These html tag are not closed such br, hr.

<br> Tag : br stands for break line.

<hr> Tag: hr stands for horizontal line.

There are following tags covers in html tags:

Html formatting:

  1. Bold text

Syntax:   <p><b>your first paragraph in bold text.</b></p>

  1. Italic text

Syntax:  <p><i>your paragraph is in italic here.</i></p>

Html Marquee: It is a non standard html element which is used to scroll a image or text horizontally or vertically.

Eg:-    <marquee> this is an example of marquee text. </marquee>

Now you can Test or run Html code via Online Html editor tool.
Visit for more information in detail –

Online Html Editor Tool : Online Html Editor tool is helpful to preview the output. It is also provide the facility for test yourself any code. There is no need to compile Html code.  In this editor text. 

Posted in Python programming

What is Python? |Python Tutorial for beginners – JavaTpoint

Python is objected oriented programming language. Python is widely used general purpose high level programming language. It design philosophy emphasizes code readability and its syntax allow s programmer to express concept in fewer line of code than would be possible in language such as C.

Python was created by Guido van Rossum, a farmer resident of Netherlands, whose favorite comedy group at the time was Monty python’s flying circus.

Python programming language is able to be used on any modern computer operating system. It may easily to be used for processing text, number, images, scientific data, or any things else which one might on save on a computer.

Python uses dynamic typing and a combination of reference counting and a cycle-detecting garbage collector for memory management.

An important feature of Python programming is dynamic name resolution (late binding), which binds method and variable names during program execution.


There are the three major reasons people choose python :

  • Readability: Python is a very closely resembles the English language using word like ‘not’ and ‘in’ to make it. Where you can very often read a program, script, aloud to someone else and not feel like you are speaking arcane language. This is also helped by python’s very strict punctuation rules which mean you don’t have curly braces ( { }) all over the code.
  • Libraries: if you want to use python to built script with commandline argument you had install the click library and then import it into your script and use it. There are libraries for pretty much use case you can come up with, image manipulation, to scientific calculations, to server automation.
  • Community: Python has user group everywhere, usually called PUGs, and does major conferences on every continent other than Antarctica.

It is used in daily in the operation of Google search engine, video sharing on YouTube, NASA, and New York stock Exchange. Python play the important roles in the success of business, government, and non-profit organization.

JavaTpoint is the way to provide the tutorial for python beginners in depth and easy way with simple example. JavaTpoint describe the tutorials on various technology such as Java, Android, C programming, Cloud computing, SQL, Javascript, Ajax, EJB, Spring, Hibernate, Interview questions, Online Quiz, and Forum.