Java实现计算一个月有多少天和多少周

import java.util.Calendar;

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) + "月的天数和周数-------------");
		System.out.println("天数：" + c.getActualMaximum(Calendar.DAY_OF_MONTH));
		System.out.println("周数：" + c.getActualMaximum(Calendar.WEEK_OF_MONTH));
	}
}