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Java Program to return a Date set to the first possible millisecond of the month after midnight
Use the getMaximum() method in Java to returns the maximum value for the given calendar field. We will use it to set the minute, second and milliseconds.
Let us first declare a calendar object −
Calendar dateNoon = Calendar.getInstance();
Now, we will set the hour, minute, second and millisecond to the first possible millisecond of the month after midnight −
// hour, minute and second calendar.set(Calendar.HOUR_OF_DAY, calendar.getMaximum(Calendar.HOUR_OF_DAY)); calendar.set(Calendar.MINUTE, calendar.getMaximum(Calendar.MINUTE)); calendar.set(Calendar.SECOND, calendar.getMaximum(Calendar.SECOND)); // millisecond calendar.set(Calendar.MILLISECOND, calendar.getMaximum(Calendar.MILLISECOND));
The following is an example that return a Date set to the first possible millisecond of the month after midnight −
Example
import java.util.Calendar;
import java.util.GregorianCalendar;
public class Demo {
public static void main(String[] argv) throws Exception {
Calendar calendar = Calendar.getInstance();
// hour, minute and second
calendar.set(Calendar.HOUR_OF_DAY, calendar.getMinimum(Calendar.HOUR_OF_DAY));
calendar.set(Calendar.MINUTE, calendar.getMinimum(Calendar.MINUTE));
calendar.set(Calendar.SECOND, calendar.getMinimum(Calendar.SECOND));
// millisecond
calendar.set(Calendar.MILLISECOND, calendar.getMinimum(Calendar.MILLISECOND));
calendar.set(Calendar.DAY_OF_MONTH, 1); // first day of month
System.out.println(calendar.getTime());
}
}Output
Thu Nov 01 00:00:00 UTC 2018
Updated on: 30-Jul-2019
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