kotlin-datetime

下面是 java 代码，

Timestamp timestamp = new Timestamp(System.currentTimeMillis());
//2016-11-16 06:43:19.77

//method 2 - via Date
Date date = new Date();
System.out.println(new Timestamp(date.getTime()));
//2016-11-16 06:43:19.769

//return number of milliseconds since January 1, 1970, 00:00:00 GMT
System.out.println(timestamp.getTime());

private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss");

//format timestamp
System.out.println(sdf.format(timestamp));

获取时间

val current = LocalDateTime.now()
val formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS")
val formatted = current.format(formatter)
println("Current Date and Time is: $formatted")
//Current Date and Time is: 2017-08-02 11:29:57.401

timestamp to date

val stamp = Timestamp(System.currentTimeMillis())
val date = Date(stamp.getTime())
println(date)