通过Calendar对象获取今天是几年几月几日几周

通过Calendar对象获取今天是多少年多少月多少日;
 (1)获取今天在一年中是第几周;
 (2)获取当前月份在一年中是第几个月;

package demo5;

import java.util.Calendar;

/*
 * 通过Calendar对象获取今天是多少年多少月多少日;
 (1)获取今天在一年中是第几周;
 (2)获取当前月份在一年中是第几个月;
 */
public class CalendarTest {

	public static void main(String[] args) {
		Calendar ca = Calendar.getInstance();
		
		int year = ca.get(Calendar.YEAR);
		int month = ca.get(Calendar.MONTH) + 1;
		int day = ca.get(Calendar.DAY_OF_MONTH);
		int week = ca.get(Calendar.WEEK_OF_YEAR);
		
		System.out.println(year+"年"+month+"月"+day+"日");
		System.out.println("今天为"+year+"年"+week+"周");
		System.out.println("当前为"+year+"年"+month+"月");

	}

}