About this app

This application What is Kotlin, Kotlin Lessons, Kotlin Samples and Kotlin or Java? It consists of parts.
You can use this application, where you can reach more information and details about the Kotlin language, at any time.

Kotlin was created by JetBrains firm in 2010.
Kotlin was announced at the JVM Language Summit event on July 19, 2011.
Kotlin is a static programming language.
Kotlin is an open source project developed under the Apache 2.0 license, open to support and assistance.
The source code of the project is open to everyone. You can make improvements to support the project. To review and support the project, you can visit Github: https://github.com/jetbrains/kotlin
Kotlin's first development was made by the software developers of JetBrains, a company based in Russia. Kotlin's name comes from the island of Kotlin in Russia.


1) Kotlin is a free, open source code programming language developed statically under the Apache 2.0 license. You can support the Kotlin language and contribute to the development of Kotlin.

2) Kotlin is an object oriented functional language. It is an object oriented programming language like Java, C # and C ++.

3) Perl and Unix / Linux supports adding to the shell script style string.

4) Kotlin is shorter and more specific than Java. The most important feature that pleases and attracts programmers is that it is simple and unique.

5) Kotlin works 100% compatible with Java and Android. With Java, Kotlin can be thought of as half an apple.

6) Kotlin is a more secure language than Java. So what does this security mean? Null data, which has been used in object-oriented programs since 1965 and caused billions of dollars in damages, was treated more securely with Kotlin and prevented from damaging the system. You have to make a special effort to get Null error in Kotlin :)

7. It supports the development of server and client based web applications.

8. It is compiled into JavaScript codes and used in HTML pages.
If you are interested in languages ​​used on the web such as Javascript and HTML, I think Kotlin is a language you will like.

9. Kotlin and Java are working together. You can use Kotlin in Javan and Java in Kotlin. You can easily translate the Java code you have written in Android Studio into the Kotlin language.

10. Kotlin enables application development using existing Java libraries. It works with Java. It cannot be considered independently of Java.

11. The most important factor that highlights the Kotlin language is that the Android Developer division of Google Company trusts this language and supports it to develop Android applications.

With the Kotlin programming language, you can develop various applications on 4 main platforms or areas. The development areas are listed below.
JVM: Server-side Applications
Android: Android Apps
Browser: JavaScript based Web Applications
Native: MacOS, iOS and Embedded systems Applications. (Under development.)

a) Kotlin's correction of some deficiencies in Java:
Checking null references,
No raw data type,
Arrays do not change
There are correct types of functions.
It doesn't check exceptions.

b) Features not in Java with Kotlin:
Null-safety
Smart casts
String templates,
Properties,
Primary constructors,
Range,
Operator overloading
Data Classes
For more information, you can visit the official Kotlin page:
https://kotlinlang.org/

c) Features in Java but not Kotlin
Exception Control
Primitive Data Types
Static Members
Joker Types
Ternary Operator
On 7 May 2019, Google announced that the Kotlin programming language is now its preferred language for Android app developers. As a result many developers have switched to Kotlin Since the release of Android Studio 3.0 in October 2017, Kotlin has been included as an alternative to the standard Java compiler. The Android Kotlin compiler targets Java 6 by default, but lets the programmer choose to target Java 8 up to 13, for optimization or more features.

New features

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App Permissions

Allows applications to open network sockets.
Allows applications to access information about networks.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.