- It is not mandatory to define datatype while declaring variable
- By default Any datatype is set for variable (Any is one datatype) in kotlin.
- It will set Datatype of its first assigned value.
- once datatype it set you can’t change datatype again.
- You can also set datatype explicit
- To set data dtype of variable use “ : “ operator followed by datatype (first letter of datatype must be capital)
Variable
- “var” keyword is used to Declare variable in kotlin
- Ex: var a
- Ex: var b = 20
- Ex: var c : String = “Hello”
- variable are mutable so you can be reassigne its value
Value
- “val” Keyword is used to Declare constant variable in kotlin
- Ex: val a = 19
- Ex: val name : String = “Jadav”
- It must be intialized while declared
- Value are Immutable so you cant reassigne its value again
→ For more example view
- Kotlin / day1 / variable.kt
