import java.text.DateFormat;
import java.util.Calendar;
import java.util.SimpleTimeZone;
/**
from
* 时代Java
**/
public class Main {
public static void main(String[] args) {
Calendar calendar = Calendar.getInstance();
if(calendar.isWeekDateSupported()) {
System.out.println("Number of weeks in this year: " + calendar.getWeeksInWeekYear());
System.out.println("Current week number: " + calendar.get(Calendar.WEEK_OF_YEAR));
/**
来 自 nowjava - 时 代 Java
**/
}
calendar.setWeekDate(2012, 16, 3);
System.out.println(DateFormat.getDateTimeInstance(
DateFormat.LONG, DateFormat.LONG).format(calendar.getTime()));
calendar.setWeekDate(2022, 1, 1);
System.out.println(DateFormat.getDateTimeInstance(
DateFormat.LONG, DateFormat.LONG).format(calendar.getTime()));
SimpleTimeZone simpleTimeZone = new SimpleTimeZone(
-21600000,
"CST",
Calendar.MARCH, 1, -Calendar.SUNDAY,
7200000,
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