what is difference between arraryListOf() and listOf()

# getting-started

[techie01]

what is difference between arraryListOf() and listOf()

[krissrex]

Use arrayListOf if you explicitly need an ArrayList:
val arrayList: ArrayList<Int> = arrayListOf(1,2,3)

Use mutableListOf if you just need a list that you can change:
val list = mutableListOf(1,2,3)

Use listOf if you need a list that is imutable (which means you can't add or remove from it):
val list = listOf(1,2,3)

[krissrex]

arrayListOf is probably needed if you use a java library that needs it. Otherwise, MutableList is wiser to use in kotlin

[techie01]

both are kotlin

[techie01]

except listOf has the mutable type

[karelpeeters]

ArrayList is always mutable.