DateTime datetime = new DateTime(); long millis = datetime.getMillis(); System.out.println(millis);
DateTime datetime = new DateTime(2021, 4, 25, 15, 30, 0); long millis = datetime.getMillis(); System.out.println(millis);This code creates a new DateTime object representing the date and time "2021-04-25 15:30:00" and then calls the getMillis method to retrieve the millisecond value of this object. In both examples, the Joda-Time library is used to create and manipulate the DateTime object.