GregorianCalendar class & TimeZone in java

 package com.company;

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

public class tuts {
     public static void main(String[] args) {
//          Calendar c = Calendar.getInstance();
//          System.out.println(c.getCalendarType());
//          System.out.println(c.getTimeZone());
//

          Calendar c = Calendar.getInstance();
          System.out.println(c.getCalendarType());
          System.out.println(c.getTimeZone().getID());
          System.out.println(c.get(Calendar.AM_PM));
          System.out.println(c.get(Calendar.DATE));
          System.out.println(c.get(Calendar.HOUR));
          System.out.println(c.get(Calendar.HOUR_OF_DAY) + ":" + c.get(Calendar.MINUTE) + ":" + c.get(Calendar.SECOND));

          GregorianCalendar cal = new GregorianCalendar();
          System.out.println(cal.isLeapYear(2020));
          System.out.println(cal.isLeapYear(2019));
          System.out.println(TimeZone.getAvailableIDs()[0]);
          System.out.println(TimeZone.getAvailableIDs()[1]);
          System.out.println(TimeZone.getAvailableIDs()[100]);



     }
}