The setTime method sets the calendar's time to a specified Date object. January is represented as 0, February as 1, and so on, with December being represented as 11. Note : the months in the Calendar class are zero-indexed. Note :The set method in the Calendar class can be used with the arguments (year, month, day) || (year, month, day, hour, minute) || (year, month, day, hour, minute, second ). If you want to set all the fields, you should use the set method with multiple arguments. Note : If you only set specific fields (ex: year, month, day of month) in a Calendar object using the set method (ex: set(Calendar.YEAR, 2022)), the other fields (ex: hour, minute, second) will take the current value. In this example, a Calendar object is created using the Calendar.getInstance() method, and then the set method is used to set the year to 2022, the month to December, and the day of the month to 31. Here’s an example of using the set method: Calendar calendar = Calendar.getInstance() t(Calendar.YEAR, 2022) t(Calendar.MONTH, Calendar.DECEMBER) t(Calendar.DAY_OF_MONTH, 31) (calendar.getTime()) It takes two arguments: a field constant (such as Calendar.YEAR, Calendar.MONTH, etc.) that represents the field to be set, and an integer value that represents the new value for that field. The set method in the Calendar class sets individual fields ,such as the year, month, day, hour, minute, second, etc. Calendar calendar = new GregorianCalendar() (calendar.getTime()) set() & setTime() methods in the Calender Class Instead of using the getInstance() of Calendar Class we can use directly the GregorianCalendar class. The Gregorian calendar was introduced by Pope Gregory XIII in October 1582 to replace the Julian calendar. It is a solar calendar with 12 months, each with either 28, 30, or 31 days. Note : The Gregorian calendar is the calendar used in most of the world. In most cases, it will return an instance of the GregorianCalendar class, which is a subclass of the Calendar class and represents the Gregorian calendar. The concrete implementation of the Calendar class that is returned by Calendar.getInstance() depends on the default locale and time zone. The Calendar.getInstance() method returns a Calendar object that is set to the current date and time in the default time zone and locale. To handle time zones when working with Date objects, we will use the class, which provides support for time zones and allows you to get and set the time zone for a Calendar instance.Ĭreating a Calendar Instance : Calendar calendar = Calendar.getInstance() (calendar.getTime()) The Date class only represents a specific point in time. The class does not provide direct support for setting a time zone. So, by passing the result of System.currentTimeMillis() to the Date constructor, we are creating a Date object that represents the current date and time.ĭate class has also a constructor that can take the date in the form of a String (the String should be in the form “MM/DD/YYYY”). System.currentTimeMillis() is a method that returns the current time as the number of milliseconds since the epoch (January 1, 1970, 00:00:00 UTC).

You can also create a Date object by passing a long value representing the number of milliseconds since the epoch to its constructor.Įxample: // current date Date d = new Date(System.currentTimeMillis()) (d) Note : internally Date class use a long variable to store the date in the form of milliseconds. current date Date d = new Date() (d) // Sun Feb 05 19:42:18 WEST 2023 -> when i'm writing this article The class represents a date and time as the number of milliseconds since January 1, 1970, 00:00:00, This is called the 'epoch time'. The java.time package provides more intuitive and easier-to-use classes for working with dates, times, and time zones, such as LocalDate, LocalTime, LocalDateTime & ZonedDateTime… Date & Calendar classes However, these classes had some limitations, leading to the introduction of the more modern java.time package in Java 8. In Java 7 and earlier versions, the Date and Calendar classes in the java.util package were used to handle date and time.

Get codepoints in java