Kotlin Basics Tutorial 1

Creating a main function in Kotlin and Java

Java
we need to create class then want to add following function

 public static void main(String[] args){} 

Kotlin
we don't need to create class,just add function 

       
fun main(args: Array<String>){}

or we can add :Unit instead of void in java

fun main(args: Array<String>): Unit{}

For returning type int

fun main(args: Array<String>): Int{}

For printing just type

print("Hello World")

/***************************************************************/

For printing Hello World in java ,we need first create a class in java then followed my main class
Java

       

public class MyClass{

public static void main(String[] args){



System.out.println("Hello World");



}

}

In Kotlin we don't need to create class , just create function defining fun...and not need any semicolon for ending command, Kotlin compiler internally create class for function while running the program

fun main(args: Array<String>){

print("Hello World")

}

Posted in: Kotlin