Java 8 introduced a new API for Data & Time (package java.time) that introduced the class LocalDateTime that can be used to represent date-time without a time-zone in the ISO-8601 calendar system, such as 2023-03-22T11:12:13
In order to convet LocalDateTime into a java.sql.Timestamp obejct we will need to make use convert the LocalDateTime into an Instant type and then Timestamp.from() method.
Code Example 1: If need to make use of Time Zoneimport java.sql.Timestamp;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
public class Main {
public static void main(String[] args) {
//Step 1: Get the LocalDateTime Object
LocalDateTime localDateTime = LocalDateTime.now();
//Step 2: Convert to ZonedDateTime
ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneId.of("America/New_York"));
//Step 3: Get Instant from ZonedDateTime
Instant instant = zonedDateTime.toInstant();
//Step 4: Create Timestamp object from Instant object
Timestamp timestamp = Timestamp.from(instant);
System.out.println("Local Date Time to instant: " + instant);
System.out.println("Local Date Time: " + localDateTime);
System.out.println("Timestamp: "+ timestamp);
}
}
Output:
Local Date Time: 2023-03-22T15:02:13.021877
Local Date Time to instant: 2023-03-22T01:13:13.021877Z
Timestamp: 2023-03-23 01:13:13.021877
Code Example 2: When need to convert to Timestamp in the same timezone (or ZoneId.systemDefault())
import java.sql.Timestamp;
import java.time.LocalDateTime;
public class Main {
public static void main(String[] args) {
LocalDateTime localDateTime = LocalDateTime.now();
Timestamp timestamp = Timestamp.valueOf(localDateTime);
System.out.println("Local Date Time: " + localDateTime);
System.out.println("Timestamp: "+ timestamp);
}
}
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