val l = LocalDate.parse("14-02-2018", DateTimeFormatter.ofPattern("dd-MM-yyyy"))

​

val unix = l.atStartOfDay(ZoneId.systemDefault()).toInstant().epochSecond

//create an extension function on a date class which returns a string

    private fun Date.dateToString(format: String): String {

    //simple date formatter

        val dateFormatter = SimpleDateFormat(format, Locale.getDefault())

        //return the formatted date string

        return dateFormatter.format(this)

    }

    //call the extension function on a date object

    val timestampt = Date()

    val dateString = timestamp.dateToString("hh:mm a E dd-MMM")