String interpolation for double number in Kotlin

Question

How to use string interpolation for a double with 2 numbers after the period in Kotlin?

For example

val d = 3.54213
println("d = $d")

will get d = 3.54213.

I want to get d = 3.54.

Thank you.

Answer 1

You can try something like this :

   // string interpolation
    val d = 3.54213
    println("d = %.2f".format(d))

This link too has the same answer but it says

There's clearly a piece of functionality here that is missing from Kotlin at the moment, we'll fix it.

Soon, you would see this on Kotlin.

Hope this helps!

Answer 2

you can try it like this

val df = DecimalFormat("#.00")
val d1 = 3.54213
df.format(d1)