ArrayList() vs arrayListOf()

Question

I was going through some Kotlin basics and found two syntaxes.

ArrayList()

And

arrayListOf()
         


        

Answer 1

it a function is right but is use of like this

here in function used set() function of arrayListOf() is used to set the given element at specified index and replace if any element already present at that index

fun main(args: Array){

   val list: ArrayList = arrayListOf()

   list.add("Ajay")
   list.add("Vijay")
   list.add("Prakash")

  println(".......print list.......")
  for (i in list) {
      println(i)
  }
  println(".......arrayList.set(2,\"Rohan\").......")
  list.set(2,"Rohan")
  println(".......print ArrayList.......")
  for (i in list) {
      println(i)
  }
}

Output

.......print list.......
Ajay
Vijay
Prakash
.......list.set(2,"Rohan").......
.......print list.......
Ajay
Vijay
Rohan