BAEL-2203 - Convert java.time.Instant to java.sql.Timestamp and vice-versa

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);
+    }
+}