GregorianCalendar is a hybrid calendar that supports both the Julian and Gregorian calendar systems with the support of a single discontinuity, which corresponds by default to the Gregorian date when the Gregorian calendar was instituted.The java.util.GregorianCalendar class in Java is a concrete subclass of Calendar and provides the standard calendar system used by most of the world.Import the following package to work with GregorianCalendar class.import java.util.GregorianCalendar;The following are the constructors.Sr.No.Constructor & Description1GregorianCalendar() This constructs a default GregorianCalendar using the current time in the default time zone with the default locale.2GregorianCalendar(int year, int month, int dayOfMonth) This constructs a GregorianCalendar with the given ... Read More

The GregorianCalendar.isLeapYear() method determines if the given year is a leap year. Returns true if the given year is a leap year.Firstly, import the following package to work with GregorianCalendar class.import java.util.GregorianCalendar;Now, check for a year by adding it as a parameter in the isLeapYear() method.gcal.isLeapYear(2012)The following is an example.Example Live Demoimport java.text.ParseException; import java.util.GregorianCalendar; public class Demo {    public static void main(String[] args) throws ParseException {       GregorianCalendar gcal = new GregorianCalendar();       System.out.println("Is it a leap year? "+gcal.isLeapYear(2012));    } }OutputIs it a leap year? trueLet us see another example.Example Live Demoimport java.text.ParseException; import java.util.GregorianCalendar; ... Read More

For using Calendar class, import the following package.import java.util.Calendar;Create a Calendar class object.Calendar cal = Calendar.getInstance();Now, get the week of month and year using the following fields.Calendar.WEEK_OF_MONTH Calendar.WEEK_OF_YEARThe following is an example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar cal = Calendar.getInstance();       // current date and time       System.out.println(cal.getTime().toString());       // date information       System.out.println("Date Information..........");       System.out.println("Year = " + cal.get(Calendar.YEAR));       System.out.println("Month = " + (cal.get(Calendar.MONTH) + 1));       System.out.println("Date = " + ... Read More

Create a Calendar object.Calendar cal = Calendar.getInstance();For using above Calendar class, do not forget to import the following package.import java.util.Calendar;Now, use the getTimeInMillis() method to get the time in milliseconds.cal.getTimeInMillis()The following is the final example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar cal = Calendar.getInstance();       System.out.println("Milliseconds =" + cal.getTimeInMillis());    } }OutputMilliseconds =1542636999896

Import the following package to work with Calendar class in Java, import java.util.Calendar;To display the entire day time, firstly create a Calendar object.Calendar cal = Calendar.getInstance();Display the entire date time using the fields shown below −// DATE Calendar.YEAR Calendar.MONTH Calendar.DATE // TIME Calendar.HOUR_OF_DAY Calendar.HOUR Calendar.MINUTE Calendar.SECOND Calendar.MILLISECONDThe following is the complete example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar cal = Calendar.getInstance();       // current date and time       System.out.println(cal.getTime().toString());       // date information       System.out.println("Date Information..........");       System.out.println("Year = ... Read More

The getActualMaximum() method returns the maximum value that the specified calendar field could have, based on the time value of this Calendar.Import the following package to work with Calendar class in Java, import java.util.Calendar;Create a calendar object.Calendar cal = Calendar.getInstance();Use the getActualMaximum() method to get the last day of the month.int res = cal.getActualMaximum(Calendar.DATE);The following is an example.Example Live Demoimport java.util.Calendar; public class Main {    public static void main(String[] args) {       Calendar cal = Calendar.getInstance();       int res = cal.getActualMaximum(Calendar.DATE);       System.out.println("Today's Date = " + cal.getTime());       System.out.println("Last Date of ... Read More

Import the following package for to work with Calendar class in Java, import java.util.Calendar;Create a calendar class now.Calendar cal = Calendar.getInstance();To display entire time information, use the following fields.cal.get(Calendar.HOUR_OF_DAY) cal.get(Calendar.HOUR) cal.get(Calendar.MINUTE) cal.get(Calendar.SECOND) cal.get(Calendar.MILLISECOND)The following is the final example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar cal = Calendar.getInstance();       // current date and time       System.out.println(cal.getTime().toString());       // time information       System.out.println("Hour (24 hour format) : " + cal.get(Calendar.HOUR_OF_DAY));       System.out.println("Hour (12 hour format) : " + cal.get(Calendar.HOUR));     ... Read More

For using Calendar class, import the following package.import java.util.Calendar;Using the Calendar class, create an object.Calendar calendar = Calendar.getInstance();Now, create a string array of the month names.String[] month = new String[] {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };Display the month name.month[calendar.get(Calendar.MONTH)]The following is an example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar calendar = Calendar.getInstance();       String[] month = new String[] {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" };       System.out.println("Current Month = " + month[calendar.get(Calendar.MONTH)]); ... Read More

For using Calendar class, import the following package.import java.util.Calendar;Using the Calendar class, create an object.Calendar calendar = Calendar.getInstance();Now, create a string array of the day names.String[] days = new String[] { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };Display the day name.days[calendar.get(Calendar.DAY_OF_WEEK) - 1]The following is the final example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar calendar = Calendar.getInstance();       System.out.println("Day: " + (calendar.get(Calendar.DATE)));       System.out.println("Month: " + (calendar.get(Calendar.MONTH) + 1));       System.out.println("Year: " + (calendar.get(Calendar.YEAR)));       String[] days = new String[] ... Read More

To get the day of the week, use Calendar.DAY_OF_WEEK.Firstly, declare a calendar object and get the current date and time.Calendar calendar = Calendar.getInstance(); System.out.println(calendar.getTime().toString());Now, fetch the day of the week in an integer variable.int day = calendar.get(Calendar.DAY_OF_WEEK);The following is the final example.Example Live Demoimport java.util.Calendar; public class Demo {    public static void main(String[] args) {       Calendar calendar = Calendar.getInstance();       System.out.println(calendar.getTime().toString());       int day = calendar.get(Calendar.DAY_OF_WEEK);       System.out.println("Day: " + day);       int hour = calendar.get(Calendar.HOUR_OF_DAY);       System.out.println("Hour: " + hour);       int minute = ... Read More