0
想要獲得下週的第一天(下週一),但撥打getTime()
會更改Calendar對象。日曆添加行爲
請告訴我正確的方法來獲得下週的第一天。
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class Main {
public static void main(String[] args) {
{
final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
final Calendar cal = new GregorianCalendar(2013, 5, 6);
cal.setFirstDayOfWeek(Calendar.MONDAY);
//System.out.println(sdf.format(cal.getTime()));
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
System.out.println(sdf.format(cal.getTime())); // 2013-06-06
cal.add(Calendar.WEEK_OF_YEAR, 1);
System.out.println(sdf.format(cal.getTime())); // 2013-06-13
}
{
final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
final Calendar cal = new GregorianCalendar(2013, 5, 6);
cal.setFirstDayOfWeek(Calendar.MONDAY);
System.out.println(sdf.format(cal.getTime())); // 2013-06-06
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
System.out.println(sdf.format(cal.getTime())); // 2013-06-03
cal.add(Calendar.WEEK_OF_YEAR, 1);
System.out.println(sdf.format(cal.getTime())); // 2013-06-10
}
}
}