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Removed ZoneId code

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This commit is contained in:
Yatendra Goel 2018-11-03 01:01:07 +05:30
parent 3b17051337
commit 7064a7e309
1 changed files with 8 additions and 13 deletions
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19
java-dates/src/main/java/com/baeldung/datetime/ConvertInstantToTimestamp.java
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@ -1,5 +1,7 @@
package com.baeldung.datetime; package com.baeldung.datetime;
import static org.junit.Assert.assertEquals;
import java.sql.Timestamp; import java.sql.Timestamp;
import java.text.DateFormat; import java.text.DateFormat;
import java.text.SimpleDateFormat; import java.text.SimpleDateFormat;
@ -16,22 +18,15 @@ public class ConvertInstantToTimestamp {
public static void run() { public static void run() {
Instant instant = Instant.now(); Instant instant = Instant.now();
Timestamp timestamp = Timestamp.from(instant); // same point on the time-line as Instant Timestamp timestamp = Timestamp.from(instant); // same point on the time-line as Instant
assertEquals(instant.toEpochMilli(), timestamp.getTime());
instant = timestamp.toInstant(); instant = timestamp.toInstant();
assertEquals(instant.toEpochMilli(), timestamp.getTime());
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(); DateFormat df = DateFormat.getDateTimeInstance();
df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss:SS'Z'"); df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SS'Z'");
df.setTimeZone(TimeZone.getTimeZone("UTC")); df.setTimeZone(TimeZone.getTimeZone("UTC"));
System.out.println("Instant (in UTC): " + instant); assertEquals(instant.toString(), df.format(timestamp).toString());
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);
} }
} }