package com.kang.util;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;public class CalendarTest {	public static void main(String[] args) throws ParseException {		// 获取当前年份、月份、日期		Calendar cale = null;		cale = Calendar.getInstance();		int year = cale.get(Calendar.YEAR);		int month = cale.get(Calendar.MONTH) + 1;		int day = cale.get(Calendar.DATE);		int hour = cale.get(Calendar.HOUR_OF_DAY);		int minute = cale.get(Calendar.MINUTE);		int second = cale.get(Calendar.SECOND);		int dow = cale.get(Calendar.DAY_OF_WEEK);		int dom = cale.get(Calendar.DAY_OF_MONTH);		int doy = cale.get(Calendar.DAY_OF_YEAR);		System.out.println("Current Date: " + cale.getTime());		System.out.println("Year: " + year);		System.out.println("Month: " + month);		System.out.println("Day: " + day);		System.out.println("Hour: " + hour);		System.out.println("Minute: " + minute);		System.out.println("Second: " + second);		System.out.println("Day of Week: " + dow);		System.out.println("Day of Month: " + dom);		System.out.println("Day of Year: " + doy);		// 获取当月第一天和最后一天		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");		String firstday, lastday;		// 获取前月的第一天		cale = Calendar.getInstance();		cale.add(Calendar.MONTH, 0);		cale.set(Calendar.DAY_OF_MONTH, 1);		firstday = format.format(cale.getTime());		// 获取前月的最后一天		cale = Calendar.getInstance();		cale.add(Calendar.MONTH, 1);		cale.set(Calendar.DAY_OF_MONTH, 0);		lastday = format.format(cale.getTime());		System.out.println("本月第一天和最后一天分别是 ： " + firstday + " and " + lastday);		// 获取当前日期字符串		Date d = new Date();		System.out.println("当前日期字符串1：" + format.format(d));		System.out.println("当前日期字符串2：" + year + "/" + month + "/" + day + " "				+ hour + ":" + minute + ":" + second);		// 字符串格式转化，获取年份月份或其他		String ss = "2014-08";		Calendar Date = Calendar.getInstance();		SimpleDateFormat simpleDate = new SimpleDateFormat("yyyy-MM"); // yyyy-MM-dd																		// hh:mm:ss		Date.setTime(simpleDate.parse(ss));// Date和以上的Cale的使用方法相同		int days = Date.getActualMaximum(Calendar.DAY_OF_MONTH);	// 获取当前月的天数		int month1 = Date.get(Calendar.MONTH);	// 获取当前月的天数		// 获取前一天、前一个月的日期		Calendar calendar = Calendar.getInstance();// 此时打印它获取的是系统当前时间		calendar.add(Calendar.DATE, -1); // 得到前一天		String yestedayDate = new SimpleDateFormat("yyyy-MM-dd")				.format(calendar.getTime());		calendar.add(Calendar.MONTH, -1); // 得到前一个月		int year2 = calendar.get(Calendar.YEAR);		int month2 = calendar.get(Calendar.MONTH) + 1; // 输出前一月的时候要记得加1	}}