get current date time timestamp java
// 2021-03-24 16:48:05.591
Timestamp timestamp = new Timestamp(System.currentTimeMillis());
// 2021-03-24 16:48:05.591
Date date = new Date();
Timestamp timestamp2 = new Timestamp(date.getTime());
// convert Instant to Timestamp
Timestamp ts = Timestamp.from(Instant.now())
// convert ZonedDateTime to Instant to Timestamp
Timestamp ts = Timestamp.from(ZonedDateTime.now().toInstant()));
// convert Timestamp to Instant
Instant instant = ts.toInstant();