diff --git a/java-dates/src/main/java/com/baeldung/datetime/ConvertInstantToTimestamp.java b/java-dates/src/main/java/com/baeldung/datetime/ConvertInstantToTimestamp.java new file mode 100644 index 0000000000..b2f18fd3bf --- /dev/null +++ b/java-dates/src/main/java/com/baeldung/datetime/ConvertInstantToTimestamp.java @@ -0,0 +1,36 @@ +package com.baeldung.datetime; + +import java.sql.Timestamp; +import java.text.DateFormat; +import java.text.SimpleDateFormat; +import java.time.Instant; +import java.time.ZoneId; +import java.util.TimeZone; + +public class ConvertInstantToTimestamp { + + public static void main(String[] args) { + run(); + } + + public static void run() { + Instant instant = Instant.now(); + Timestamp timestamp = Timestamp.from(instant); // same point on the time-line as Instant + + System.out.println("Instant (milliseconds from epoch)" + instant.toEpochMilli()); + System.out.println("Timestamp (milliseconds from epoch): " + timestamp.getTime()); + System.out.print("\n"); + + // Local TimeZone of the machine at the time of running this code is GMT +5:30 a.k.a IST + ZoneId zoneId = ZoneId.of(ZoneId.SHORT_IDS.get("IST")); + + DateFormat df = DateFormat.getDateTimeInstance(); + df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss:SS'Z'"); + df.setTimeZone(TimeZone.getTimeZone("UTC")); + + System.out.println("Instant (in UTC): " + instant); + System.out.println("Timestamp (in UTC): " + df.format(timestamp)); + System.out.println("Instant (in GMT +05:30): " + instant.atZone(zoneId)); + System.out.println("Timestamp (in GMT +05:30): " + timestamp); + } +} \ No newline at end of file