Found 9326 Articles for Object Oriented Programming

For GregorianCalendar class, import the following package.import java.util.GregorianCalendar;Create an object.GregorianCalendar calendar = new GregorianCalendar();To get the day of the week, use the following field.GregorianCalendar.DAY_OF_WEEKThe following is an example.Example Live Demoimport java.util.Calendar; import java.util.GregorianCalendar; public class Demo {    public static void main(String[] a) {       GregorianCalendar calendar = new GregorianCalendar();       System.out.println("Day of Week = " + calendar.get(GregorianCalendar.DAY_OF_WEEK));       System.out.println("Date = " + calendar.get(GregorianCalendar.DATE));       System.out.println("Month = " + calendar.get(GregorianCalendar.MONTH));       System.out.println("Year = " + calendar.get(GregorianCalendar.YEAR));    } }OutputDay of Week = 2 Date = 19 Month = 10 Year = ... Read More

To work with the GregorianCalendar class, import the following package.import java.util.GregorianCalendar;Firstly, create a GregorianCalendar object.GregorianCalendar calendar = new GregorianCalendar();Now, set the above-created object to a date. Here 0 is for 1st month.calendar.set(2018, 0, 25);The following is an example.Example Live Demoimport java.util.GregorianCalendar; import java.util.Calendar; import java.util.Date; public class Demo {    public static void main(String[] args) {       GregorianCalendar calendar = new GregorianCalendar();       // 0 is for 1st month       calendar.set(2018, 0, 25);       System.out.println("" + calendar.getTime());    } }OutputThu Jan 25 16:51:24 UTC 2018

To work with the GregorianCalendar class, import the following package.import java.util.GregorianCalendar;Create a Date object.Date d = new Date();Now, create an object and set the time using the setTime() method.GregorianCalendar cal = new GregorianCalendar(); cal.setTime(d);The following is an example.Example Live Demoimport java.util.Date; import java.util.GregorianCalendar; public class Demo {    public static void main(String[] a) {       Date d = new Date();       GregorianCalendar cal = new GregorianCalendar();       cal.setTime(d);       System.out.println(d);    } }OutputMon Nov 19 16:11:31 UTC 2018

To specify the TimeZone explicitly, use the getTimeZone() method of the TimeZone class. For Locale and TimeZone, we have imported the following packages.import java.util.Locale; import java.util.TimeZoneLet us specify for timezone America/New_York.GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("America/New_York"), Locale.US);The following is an example.Example Live Demoimport java.util.GregorianCalendar; import java.util.Locale; import java.util.TimeZone; public class Demo {    public static void main(String[] a) {       GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("America/New_York"), Locale.US);       System.out.println(cal);    } }Outputjava.util.GregorianCalendar[time=1542643323673, areFieldsSet=true, areAllFieldsSet=true, lenient=true, zone=sun.util.calendar.ZoneInfo[id="America/New_York", offset=-18000000, dstSavings=3600000, useDaylight=true, transitions=235, lastRule=java.util.SimpleTimeZone[id=America/New_York, offset=-18000000, dstSavings=3600000, useDaylight=true, startYear=0, startMode=3, startMonth=2, startDay=8, startDayOfWeek=1, startRead More

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