Difference between MutableList and List in Kotlin

Question

1. What is the difference between MutableList and List in Kotlin?
2. and what is the use of each type?

Answer 1

• List

  var language: List = listOf("java", "kotlin", "dart")
  

  List type is an interface which provides read-only access. you are limited to read operations like

  get, indexof, subList, contains, size etc

with kotlin you have access to some more functions **like sort, stream,binarySearch

• MutableList

Consider this example:

    var mutableLanguage: MutableList = mutableListOf("java", "kotlin", "dart")

with mutablelist you can perform read and write operation i.e., add or remove contents of a list. beside supporting all the functions of interface type List.

add, addAll, replace, replaceAll, set, removeAt etc