Format number using decimal format in kotlin

user_10778725 0
Viewed 64435

I am facing an issue where I need to do some calculations with a number like for example 5000,00 multiplied it by (1,025^3).

So in this case 5000,00 * (1,025^3) = 5385,45

So my question is, how can I format the number 5385,45 to be like 5.385,45 using decimal format maybe?

I tried by myself and I did this piece of code that outputs 5385,45 in the app but not 5.385,45

    var interestValue = (5000,00*(Math.pow(1.025,yearValue)))
    val number = java.lang.Double.valueOf(interestValue)
    val dec = DecimalFormat("#,00")
    val credits = dec.format(number)
    vValueInterest.text = credits
decimalformat kotlin android
5 Answers

This is the format you need:

val dec = DecimalFormat("#,###.##")

will print:

5.384,45

if you need always exactly 2 digits after the decimal point:

val dec = DecimalFormat("#,###.00")
user_104988280
user_12757960

Used:

%.numberf

fun main(args: Array<String>) {
var A: Double
A = readLine()!!.toDouble()
var bla = A*A
var calculator = 3.14159 * bla
println("A=%.4f".format(calculator))
}
user_140216360

The "most Kotlin-esque" way I found to do this sort of formatting is:

"%,.2f".format(Locale.GERMAN, 1234.5678)      // => "1.234,57"
"%,.2f".format(Locale.ENGLISH, 1234.5678)     // => "1,234.57"

"%,.2f".format(1234.5678)                     // => "1,234.57" for me, in en_AU

Note though that even though this is Kotlin's own extension method on String, it still only works on the JVM.

For those looking for a multiplatform implementation (as I was), mp_stools is one option.

user_1385130

Try val dec = DecimalFormat("#.###,00"). For examples of DecimalFormat check this link.

user_89064880
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