toByteArray
Encodes the contents of this string using the specified character set and returns the resulting byte array.
import java.util.Locale
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val charset = Charsets.UTF_8
val byteArray = "Hello".toByteArray(charset)
println(byteArray.contentToString()) // [72, 101, 108, 108, 111]
println(byteArray.toString(charset)) // Hello
//sampleEnd
}