import java.time.LocalDateTime
import java.time.format.DateTimeFormatter

val now = LocalDateTime.now()

var df = DateTimeFormatter
    .ofPattern("M/dd/yy h:mm a")
val shortStyle = now.format(df)
//shortStyle is "2/21/19 3:57 PM"

df = DateTimeFormatter
    .ofPattern("yyyy-MM-dd")
val customStyle = df.format(now)
//customStyle is 2019-02-21

println("shortStyle is $shortStyle")
println("customStyle is $customStyle")