#android_kotlin

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Learn about Kotlin with android training in Chandigarh

What is Kotlin?

Google announced Kotlin as an official language for Android Application development in Google I/O 2017.Kotlin is a

statically-typed language, developed by JetBrains and Open source Contributors in the 2011, that runs on JVM(Java Virtual Machine) and is compiled to JavaScript source code. It is very applicable for server-side application development with full sympathy of Java frameworks. You can use multiple frameworks like - Spring, Vert.x, Ktor etc. for web application development.

Features  : Learning feature is most important . Let us learn it with android training in chandigarh.                                                                      

It is compatible to greater than or equal version of JDK 6

As Kotlin uses inline functions and lambda operations it requires much less time to execute.

Kotlin allows using all Java frameworks.

Kotlin supports incremental assembling so it compulsory less assembling time than Java.

Kotlin is very easy to learn. It does not make too many restrictions in programming.

It is null-safe.

It can be learned easily.

Code review is easy in Kotlin.

Automatic conversion java to Kotlin.

Kotlin has dropped new keyword of java.

Kotlin has dropped static keyword of java.

It uses Safe call operator (.?).

Characters are not number in Kotlin

Octal literals are not supported.

Extension functions, you can add methods to classes without changing their source code.

Kotlin has data keyword to create model classes.

It uses a colon (:) operator alternately of extends keyword of Java.

Toolchain

Kotlin source code converts to bytecode after compilation which can run on JVM or JavaScript source code. Setup IntelliJ IDE for Kotlin

You can utilize IntelliJ, Android Studio, and Eclipse for Kotlin programming.

If you wish to use Eclipse then go through the link – Getting started with kotlin.

Or you can visitation my article appropriating initiated with Android and Kotlin to use kotlin for Android Application development.

Here are the steps to setup kotlin with Intellij IDE:

Make sure your system have 7 or later version.

Download and install Intellij IDE.

Now click on IntelliJ IDE desktop icon to launch it.

Create new project as,

   Select Project Category then click on next.

   Give the project name,location and SDK path. Then click on  finish

   Now create kotlin file on src folder using IDE

   Now add your hello world program as below and run by right    clicking and choosing run menu or play button from standard toolbar,

Variables

You can use var key to generate variables .

Syntax

<access specifiers>  var  <variable name> : < data type>=<value>;

Literal Constant

Decimals - any number i.e 1234,high  literals are marked by ‘L’   like 123L

Hexadecimals -  0x0F

Binaries - 0b000001101

Doubles -  212.7 or 212.5e5

String - “hello kotlin” or “ ” ” (triple quotes for raw string.)

Octal literals are not supported by Kotlin

Underscore can use for numeric literals i.e val ten thousand=10_000

Characters are not number in kotlin

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