import java.util.Calendar;/** * 功能概述：計算指定年月的天數和周數<br> * 創建時間：2010-5-17 下午05:25:58<br> *  */public class Test{	public static void main(String[] args) {		Calendar c = Calendar.getInstance();		c.set(Calendar.YEAR, 2010); // 2010年		c.set(Calendar.MONTH, 5); // 6 月		System.out.println("------------" + c.get(Calendar.YEAR) + "年" + (c.get(Calendar.MONTH) + 1) + "月的天數和周數-------------");		System.out.println("天數：" + c.getActualMaximum(Calendar.DAY_OF_MONTH));		System.out.println("周數：" + c.getActualMaximum(Calendar.WEEK_OF_MONTH));	}}