Println('Size of the list ' + theList.size)

Val theList = listOf('one', 'two', null, 'four', 'five') We can use size property to get the total number of elements in a list:

Note - here it works like this operator in Java. Lets study them one by one: Using toString() function There are various ways to loop through a Kotlin list. When you run the above Kotlin program, it will generate the following output: Val theMutableList = mutableListOf('one', 'two', 'three', 'four') Val theList = listOf('one', 'two', 'three', 'four') To prevent unwanted modifications, obtain read-only views of mutable lists by casting them to List. Creating Kotlin Listsįor list creation, use the standard library functions listOf() for read-only lists and mutableListOf() for mutable lists. Kotlin mutable or immutable lists can have duplicate elements. The elements of list can be accessed using indices. A Kotlin list can be either mutable ( mutableListOf) or read-only ( listOf). Now let just see how we can make a List in Kotlin Language.Kotlin list is an ordered collection of items. In Kotlin we declare the List as follows: public interface List : Collection (source) If we want to use the List Interface in the Kotlin, we need to use its function named as listof( ), listof( ).Īll the elements of the List always follow the sequence of the insertion order and contain the index number which is the same as the array. Kotlin list is immutable and their methods support only the read functionalities. List interface is inherited from the Collection class. Kotlin List is basically an interface and the generic collection of elements. Iterating the List element using for-each loop A sample Java Code for the List: import java.util.*

Kotlin list example