Kotlin is a new programming language for Android App development and it is discovered by Google.It will be an alternate option in place of Java language for android app development.

1. Institute of Engineering &Technology
SEMINAR ON
KOTLIN
SACHIN
141231030242
BUNDELKHAND UNIVERSITY JHANSI

2. KOTLIN-?

3. Contents
 Introduction
 History
 Features of Kotlin programming language
 Basic syntax
 Difference Between kotlin and java
 Conclusion

4. Introduction
• Kotlin is a statically-typed programming language
• It is jvm targeted language
• It support object oriented programing and
functional programing feature
• It can also can be compiled to JavaScript source
code
• Its primary development is from a team of
JetBrains

5. History…
 In July 2011 JetBrains Start Project Kotlin, a new
language for the JVM, which had been under
development for a year.
 JetBrains hopes that the new language will
drive IntelliJ IDEA sales.
 Kotlin v1.0 was released on February 15, 2016.
 In may 2017 Google I/O Declared as the First
class language for android development

6. Features of Kotlin programming language
• Kotlin is open source.
• Full Java Interoperability.
• Kotlin compiles to JVM bytecode or JS.
• Null Safety in Kotlin.
• Kotlin wants you to write less code.
• Higher order function

7. Basic syntax
 PACKAGE:-
 Package specification should we at the top of the application similar to java
 Example-
package Bu.Iet;
import java.util;//import util package
 Defining local variables
 Example-
var a:Int=12//immediate assignment
var a=123;//type inference

8. Difference Between Kotlin and java
No Semicolons
 // Java System.out.println("Hello world!);
// Kotlin println("Hello world!")

9. No 'new'
// Java
 Boa a = new Boa();
// Kotlin
 val a = Boa()

10. No Checked Exceptions
• // Java code often looks like this
• Try
• {
• Connection con=DriverManager.getConnection()//this sta throw an
checked exception
• }
catch(SqlException r)
• {
• }
• // Kotlin has no checked exception

11. Type Inference
// Java
 Int a = 1;
 String b = “sachin";
 Program p;
 // Kotlin
 var a = 1
 var b = “sachin"
 var p: Program

12. Size of Code
• // Java
• class Person
• {
• String firstName;
Person(String firstName) { this.firstName = firstName;
• }
• }
• // Kotlin class with primary constructor
• class Person(firstName: String)

13. Data Classes
• // Java
• To hold the data we must make simple classes with getter and setter method
in data
• // Kotlin
• In kotlin they provide the concept od data classes to hold the data
• To define an data class in kotlin we use the keyword data before the class
keyword
• data class Student(val name: String,val age: int)

15. Any Queries