import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class Test {
public static void main(String[] args) {
Calendar calendar = Calendar.getInstance();
calendar.setFirstDayOfWeek(Calendar.MONDAY);
calendar.add(Calendar.DATE, -7);
calendar.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
Date sTime = calendar.getTime();
calendar.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
Date eTime = calendar.getTime();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String s = sdf.format(sTime) + " 00:00:00";
String e = sdf.format(eTime) + " 23:59:59";
System.out.println(s);
System.out.println(e);
}
}