黑马程序员20-1：Calendar，取出并修改某一时刻的时间

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package cn.itcast.p1.otherapi;

import java.util.Calendar;

public class CalendarDemo {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		Calendar c = Calendar.getInstance();
		
		int year = 2012;
		showDays(year);
	}

	/**
	 * @param c
	 */
	public static void showDays(int year) {
		
		Calendar c = Calendar.getInstance();
		//自定义修改时间
		c.set(year, 2, 1);
		
		c.add(Calendar.DAY_OF_MONTH, -1);
		
		showDate(c);
	}

	/**
	 * @param c
	 */
	//取的时候，记得月份+1,就像数组取值那样
	public static void showDate(Calendar c) {
		int year = c.get(Calendar.YEAR);
		int month = c.get(Calendar.MONTH)+1;
		int day = c.get(Calendar.DAY_OF_MONTH);
		int week = c.get(Calendar.DAY_OF_WEEK);
		
		
		System.out.println(year+"年"+month+"月"+day+"日"+getWeek(week));
	}

	public static String getWeek(int i) {
		
		String[] weeks = {"","星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
		
		return weeks[i];
	}
}

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