Variables and Data Types in Kotlin :

In this tutorial we will learn how to declare variables in Kotlin. We are having java comparison code for easy and quick learning.

In kotlin all data types are defined with keyword var. There is no final 

Example 1 :

Java Code :

class A{  

private int data=50;
public String mData = "Test";
procted float test1 = 1.23;
private double test2 = 2.33; //instance variable  
public static final int FILES_TO_DOWNLOAD = 100 //static variable 

void method(){  
int n=90;//local variable  
}  

}//end of class 

Converted Kotlin Code : 

class A {

  private val data = 50
  var mData = "Test"
  var test1 = 1.23f
  private val test2 = 2.33//instance variable 

  fun method() {
    val n = 90//local variable 
  }

  companion object {
    val FILES_TO_DOWNLOAD = 100//static variable
  }

}//end of class