日期算法

今天是星期1 ，200天后是星期几?

import java.util.Calendar;

public class DateSuanFa {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Calendar c = Calendar.getInstance();
		c.add(Calendar.DAY_OF_YEAR, 200);
		System.out.println(c.get(Calendar.DAY_OF_WEEK));
		try {
			System.out.format("%1$ tF", c);
		} catch (Exception e) {
			// TODO: handle exception
		}

	}

}