Best Android Development Training Company in Roorkee

Best Android Training Company in Roorkee

Introduction of Android?

Android is a mobile operating system based on Linux kernel. Android Operating System is developed by a team of Andy Roubine in Callifornia, Palo aloto city at 2003.Andy Roubine's team members are Rich Miner, Chris white and Nick Sears. Android operating system is open source operating system. Anybody can  modify android operating system. Android operating system is the most popular operating system at this time. Approx 82% people uses android operating system. Android operating system provides a lot of features of customization. In 2005 Google acquires android. In 2007, Google announced that android is a mobile operating system. In 2008, HTC mobile company launched a mobile based on android operating system. That was first android mobile. It works on android version Cupcake. Here some android versions are given below:-

Name	Version	Launch Date	Security Patches
Alpha	1.0	Sep 23, 2008	Unsupported
Beta	1.1	Feb 09, 2009	Unsupported
Cupcake	1.5	April 27, 2009	Unsupported
Donut	1.6	Sep 05, 2009	Unsupported
Éclair	2.0-2.1	Oct 26, 2009	Unsupported
Froyo	2.3-2.3.7	May 20, 2010	Unsupported
Honeycomb	3.0-3.2.6	Feb 22, 2011	Unsupported
Ice cream sandwich	4.0-4.0.4	Oct 18, 2011	Unsupported
Jellybean	4.1-4.3.1	July 9, 2012	Unsupported
KitKat	4.4-4.4.4	Oct 31, 2013	Supported
Lollipop	5.0-5.1.1	Nov 12, 2014	Supported
Marshmallow	6.0-6.0.1	Oct 5, 2015	Supported
Nougat	7.0-7.1.2	Aug 22, 2016	Supported
Oreo	8.0	Aug 21, 2017	Supported

How a android program executes?

As a java program executes by JVM (java virtual machine). So a android program executes by DVM (Dalvik Virtual Machine).

DVM:- JAVAC tool compiles the java source code into .class file. The dex compiler converts all the class files into the .dex file that run on the Dalvik Virtual Machine. Multiple class files are converted into one dex file. The android asset packaging tool (aapt) handles the packaging process and generate a apk file.

Basic Components of Android Project:-

Activity:- An activity is a class that represents a single screen. It is like a frame in AWT.

View:-  A view is a user interface element such as button, label, text field etc. Anything that you see is a view.

Intent:- Intent is used to invoke components. It is manly used to-

• ·         Start service
• ·         Launch an activity
• ·         Display a webpage
• ·         Display a list of component
• ·         Broadcast a message
• ·         Dial a phone call etc

Services:- Service is a background process that can run for a long time. There are two types of services local and remote. Local services is accessed from within the applications.

Content Provider:- Content providers are used to share data between the applications.

Fragment:- Fragments are like parts of activity. An activity can display one or more fragments on the screen at the same time.

Android Manifest.xml:- It contains information about activities, content providers, permissions etc. It is like the web.xml file in JAVA Enterprises Edition.

Android Virtual Device (AVD):- Android virtual device is  used to test android application without the need for mobile or tablet etc. It can be created in different configuration to emulate different type of devices.

Career in Android:-

As we know that android is a fastest growing mobile operating system. It is a product of Google.  As 2016 android is covering 87.8% market share. 2.6 million apps in Google play store. Android has 1.4 billion android users. 1.5 million android activations every day. According to US dollar android developer salary is $49,000 to $121,000 per year. And it increases 6% every year according to your work and experiences.  Android Developer in Asian country might have less salary compared to US salary but yet very good compared to other job in Asian counties. Android is a open source operating system so you can learn android development free from various online sources. Android has official and powerful development framework that is known as android studio.

    So we can say that android has a great career opportunity. Every company or organization wants to build a android app for their official use. They wants to maintain it in a right way and give updates to their clients. So android is a very good medium for them. They wants a android developer for build and maintain their app. So if you are interested to learn android development, must learn it.

If you want to know about Java:- click here

How can you learn Android development?

If you are really interested to learn android development then Cetpa Infotech Pvt. Ltd. is the best Android Development training company in Roorkee. Many other Android development training companies at the corner of the city, but Cetpa Infotech is the best android development training company in Roorkee. Cetpa Infotech is the most trusted android development training company in Roorkee. Cetpa Infotech is providing on practical knowledge and full job assistance with basic and advanced level of android development. Cetpa Infotech has an extremely educated and well-experienced trainer to train you for android development. Cetpa Infotech Pvt. Ltd. is one of famous Android development Training Company in Roorkee. Cetpa Infotech prepares many aspirants for Android development every year. Cetpa Infotech Pvt. Ltd. provide their training facilities as summer training and winter training. You can join cetpa infotech for short term and long term courses. Cetpa Infotech Pvt. Ltd. also provides industrial training. CetpaInfotech Pvt. Ltd. provides their training facilities in the various cities like Roorkee, Dehradun, Noida, and Lucknow. You should also read these article.

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Java Programming Language Basics

Introduction of JAVA

Java is a high-level programming language. Java is developed by a team of Sun Microsystems in 1995. Java is an independent programming language platform. When the Java language developed than it was called OAK. But OAK name was already registered for other subjects then it named as JAVA. Java is a breed of coffee. As you can see logo of java, it is like a coffee mug. Java is an object-oriented programming language. Java has a lot of features that make possible a dynamic design and working strategy for software or website.

In 2009, java was acquired by Oracle from Sun Microsystems.

Why Java Programming Language?

Some programming language features are given below:-

• ·         Java programming language is easy to learn.
• ·    Java is a platform independent programming language. A java program can be run on any platform who supports java like windows mac or Linux.
• ·         Java is an object-oriented programming language.
• ·         Java programming language is robust than some other language.
• ·         Java programming language is a secure programming language.
• ·         Java has a large API like applets, database connection, I/O Networking, XML parsing etc.
• ·         Java programming language has a powerful development tool like Netbeans or Eclipse.
• ·         Java has a large collection of the library, also open source libraries.
• ·         Java is portable.
• ·         Java supports multithreading.

Know More about Programming Languages and Other Technical Knowledge Click Here

Structure of a Java program:-

public class A{                                            //A is class name

public static void main(String args[]){   //main method

System.out.println(“Hello”);                 //body of main method

}

}

Basic System’s Requirements for a Java Programming:-For a Java program basic requirements are given below:-

• ·         JDK 1.8.0 (Latest version)
• ·         Eclipse or Netbeans IDEs (Its optional, IDEs for develop high level programs)

How can you Install JDK?

• ·         Go to the oracle official website by click on this link  Java SE Downloads.
• ·         Click on the java platform JDK.
• ·         Now click on the download link which suitable for your operating system.
• ·         Your downloading will be start.
• ·         After finish downloading, double click on the downloaded file and install it successfully.

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What is HTML | Introduction of HTML

HTML is a markup language not a programming language. Because programming languages have decision making feature.

About HTML:-

• HTML full name is Hyper Text Markup Language.
• HTML is case insensitive language.
• HTML uses markup tags to define a web page.
• Currently using HTML 5.
• HTML file has a extension .htm or .html
• HTML is developed by World Wide Web consortium.

Prerequisites:-

• No need of any programming background.
• You need a web browser installed on your machine and a text editor like notepad.
• Web browser are Internet Explorer, Mozilla firefox, chrome etc.

How Write HTML Codes:-

• You need to open notepad, open a new file and write HTML code in it.
• Save it with .html extension.
• Execute the file with any browser.
• You can reopen HTML file with notepad to make any edition.

HTML Elements:-

• An HTML element is an individual component of an HTML document.
• It starts with a start tag / opening tag and ends with an end tag / closing tag.
• The element content is everything between the start and end tag.
• Most HTML elements can have attributes.

Document Structure Elements:-

• All HTML documents must start with a type declaration: <!DOCTYPE html>

            <HTML>

            <HEAD>

            <BODY>

<HTML> TAG:-

• The root element of an HTML document. All other elements are contained in this.
• The HTML element delimits the beginning and the end of an HTML document.

<HEAD> TAG:-

• Container for processing information and metadata for an HTML document.

                         Associated files- CSS file or JAVA file

                         Some description

<BODY> TAG:-

• Container for the displayable content of an document.

Format:-

<html>

<head>

place processing information and meta data here.

</head>

<body>

Place displayable content here

</body>

</html>

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