package in.bench.resources.java8.zoneddatetime.examples;

import java.time.DayOfWeek;
import java.time.Month;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;

public class GetDateTimeZoneFieldsFromZonedDateTime {

	public static void main(String[] args) {

		// get current system date/time with Zone
		ZonedDateTime zonedDateTime = ZonedDateTime.now();
		System.out.println("Current date/time in default zone is = " + zonedDateTime);


		// 1. Date part
		System.out.println("\n1. Date part from ZonedDateTime : \n");


		// 1.1 get YEAR part from current system date
		int year = zonedDateTime.getYear();
		System.out.println("Year is : " + year);


		// 1.2 get MONTH part from current system date
		int month = zonedDateTime.getMonthValue();
		System.out.println("Month is : " + month);


		// 1.3 get MONTH part from current system date
		Month monthInWords = zonedDateTime.getMonth();
		System.out.println("Month in Words is : " + monthInWords);


		// 1.4 get DAY part from current system date
		int day = zonedDateTime.getDayOfMonth();
		System.out.println("Day is : " + day);


		// 1.5 get DAY part from current system date
		DayOfWeek dayOfWeek = zonedDateTime.getDayOfWeek();
		System.out.println("Day of Week is : " + dayOfWeek);


		// 1.6 get DAY part from current system date
		int dayOfYear = zonedDateTime.getDayOfYear();
		System.out.println("Day of Year is : " + dayOfYear);



		// 2. Time part
		System.out.println("\n2. Time part from ZonedDateTime : \n");


		// 2.1 get HOUR value from current system time
		int hours = zonedDateTime.getHour();
		System.out.println("Hour is : " + hours);


		// 2.2 get MINUTE value from current system time
		int minutes = zonedDateTime.getMinute();
		System.out.println("Minutes is : " + minutes);


		// 2.3 get SECOND value from current system time
		int seconds = zonedDateTime.getSecond();
		System.out.println("Seconds is : " + seconds);


		// 2.4 get NANO SECOND value from current system time
		int nano = zonedDateTime.getNano();
		System.out.println("Nanoseconds is : " + nano);



		// 3. Zone part
		System.out.println("\n3. Zone part from ZonedDateTime : \n");


		// 3.1 get ZONE part from current system zone
		ZoneId zoneId = zonedDateTime.getZone();
		System.out.println("Zone is : " + zoneId);


		// 3.2 get OFFSET part from current system zone
		ZoneOffset zoneOffset = zonedDateTime.getOffset();
		System.out.print("Offset  is : " + zoneOffset);
	}
}

Current date/time in default zone is = 2022-08-11T21:44:33.676816600+05:30[Asia/Calcutta]

1. Date part from ZonedDateTime : 

Year is : 2022
Month is : 8
Month in Words is : AUGUST
Day is : 11
Day of Week is : THURSDAY
Day of Year is : 223

2. Time part from ZonedDateTime : 

Hour is : 21
Minutes is : 44
Seconds is : 33
Nanoseconds is : 676816600

3. Zone part from ZonedDateTime : 

Zone is : Asia/Calcutta
Offset  is : +05:30

package in.bench.resources.java8.zoneddatetime.examples;

import java.time.Instant;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

public class GetDateTimeZoneFieldsFromCalendar {

	public static void main(String[] args) {

		// get current System Date using Date/Calendar
		Date today = new Date();
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(today);
		System.out.println("Current System Date/Time is = " + calendar.getTime());


		// 1. Date part
		System.out.println("\n1. Date fields :-");


		// 1.1 get year
		int year = calendar.get(Calendar.YEAR);
		System.out.println("\nYear is = " + year);


		// 1.2 get month
		int month = calendar.get(Calendar.MONTH);
		System.out.println("Month is = " + month);


		// 1.3 get day of month
		int day = calendar.get(Calendar.DAY_OF_MONTH);
		System.out.println("Day of Month is = " + day);


		// 1.4 get day of week (Sunday=1 and Saturday=7
		int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
		System.out.println("Day of Week is = " + dayOfWeek);


		// 1.5 get day of year
		int dayOfYear = calendar.get(Calendar.DAY_OF_YEAR);
		System.out.println("Day of Year is = " + dayOfYear);


		// 2. Time part
		System.out.println("\n2. Time fields :-");


		// 2.1 get hour
		int hour = calendar.get(Calendar.HOUR);
		System.out.println("\nHour is = " + hour);


		// 2.2 get minute
		int minute = calendar.get(Calendar.MINUTE);
		System.out.println("Minute is = " + minute);


		// 2.3 get second
		int second = calendar.get(Calendar.SECOND);
		System.out.println("Second is = " + second);


		// 2.4 get millisecond
		int millisecond = calendar.get(Calendar.MILLISECOND);
		System.out.println("MilliSecond is = " + millisecond);


		// 2.5 get AM or PM
		int amOrPm = calendar.get(Calendar.AM_PM);
		System.out.println("AM or PM ? = " + (amOrPm==1?"PM":"AM"));


		// 3. Zone part
		System.out.println("\n3. Zone fields :-");


		// 3.1 get offset in milliseconds
		int offset = calendar.get(Calendar.ZONE_OFFSET);
		System.out.println("\nOffset in Milliseconds = " + offset);


		// 3.2 get offset in difference of GMT hours
		TimeZone timeZone = TimeZone.getDefault();
		String offsetId = timeZone.toZoneId().getRules().getStandardOffset(Instant.now()).getId();
		System.out.print("Offset in Hours = " + offsetId);
	}
}

Current System Date/Time is = Thu Aug 11 21:41:41 IST 2022

1. Date fields :-

Year is = 2022
Month is = 7
Day of Month is = 11
Day of Week is = 5
Day of Year is = 223

2. Time fields :-

Hour is = 9
Minute is = 41
Second is = 41
MilliSecond is = 177
AM or PM ? = PM

3. Zone fields :-

Offset in Milliseconds = 19800000
Offset in Hours = +05:30