Java Reference
In-Depth Information
import java.time.OffsetTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.GregorianCalendar;
import java.util.TimeZone;
public class GregorianCalendarAndNewDateTime {
public static void main(String[] args) {
// Create a GC for the default time zone
GregorianCalendar gc = new GregorianCalendar(2014, 1, 11, 15, 45, 50);
System.out.println("Gregorian Calendar: " + gc.getTime());
// Convert the GC to a LocalDate
LocalDate ld = gc.toZonedDateTime().toLocalDate();
System.out.println("Local Date: " + ld);
// Convert the GC to a LocalTime
LocalTime lt = gc.toZonedDateTime().toLocalTime();
System.out.println("Local Time: " + lt);
// Convert the GC to a LocalDateTime
LocalDateTime ldt = gc.toZonedDateTime().toLocalDateTime();
System.out.println("Local DateTime: " + ldt);
// Convert the GC to an OffsetDate
OffsetDateTime od = gc.toZonedDateTime().toOffsetDateTime();
System.out.println("Offset Date: " + od);
// Convert the GC to an OffsetTime
OffsetTime ot = gc.toZonedDateTime().toOffsetDateTime().toOffsetTime();
System.out.println("Offset Time: " + ot);
// Convert the GC to an ZonedDateTime
ZonedDateTime zdt = gc.toZonedDateTime();
System.out.println("Zoned DateTime: " + zdt);
// Convert the ZonedDateTime to a GC. In GC month starts at 0
// and in new API at 1
ZoneId zoneId = zdt.getZone();
TimeZone timeZone = TimeZone.getTimeZone(zoneId);
System.out.println("Zone ID: " + zoneId);
System.out.println("Time Zone ID: " + timeZone.getID());
GregorianCalendar gc2 = GregorianCalendar.from(zdt);
System.out.println("Gregorian Calendar: " + gc2.getTime());
}
}
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