how to limit decimal in double kotlin

To limit the number of decimal places in a Double value in Kotlin, you can use the DecimalFormat class from the java.text package. Here are the steps to achieve this:

Import the necessary classes:

import java.text.DecimalFormat
import java.text.DecimalFormatSymbols
import java.util.Locale

The DecimalFormat class provides formatting capabilities for numbers, while DecimalFormatSymbols allows you to customize the symbols used for formatting.
The Locale class is used to specify the language and country-specific formatting rules.
Create an instance of DecimalFormat:

val decimalFormat = DecimalFormat("#.##", DecimalFormatSymbols(Locale.US))

In this example, the pattern #.## is used to format the number with a maximum of two decimal places. You can modify the pattern according to your needs.
The DecimalFormatSymbols(Locale.US) ensures that the decimal separator used is a period (.) and the grouping separator is a comma (,) according to the US locale.
Format the Double value:

val formattedValue = decimalFormat.format(yourDoubleValue)

Replace yourDoubleValue with the actual Double value you want to format.
The format method of the DecimalFormat class formats the given value according to the specified pattern and returns a formatted string.
Retrieve the formatted value:

println(formattedValue)

This step is optional and can be used to display or use the formatted value as needed.

Here's the complete code example:

import java.text.DecimalFormat
import java.text.DecimalFormatSymbols
import java.util.Locale

fun main() {
    val decimalFormat = DecimalFormat("#.##", DecimalFormatSymbols(Locale.US))
    val yourDoubleValue = 3.14159
    val formattedValue = decimalFormat.format(yourDoubleValue)
    println(formattedValue)
}

This code will output 3.14, which is the formatted value of the yourDoubleValue with a maximum of two decimal places.