package com.zhaochao.utils;
 
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
 
public class DataUill {
 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("當天24點時間：" + getTimesnight().toLocaleString());
		System.out.println("當前時間：" + new Date().toLocaleString());
		System.out.println("當天0點時間：" + getTimesmorning().toLocaleString());
		System.out.println("昨天0點時間：" + getYesterdaymorning().toLocaleString());
		System.out.println("近7天時間：" + getWeekFromNow().toLocaleString());
		System.out.println("本周周一0點時間：" + getTimesWeekmorning().toLocaleString());
		System.out.println("本周周日24點時間：" + getTimesWeeknight().toLocaleString());
		System.out.println("本月初0點時間：" + getTimesMonthmorning().toLocaleString());
		System.out.println("本月未24點時間：" + getTimesMonthnight().toLocaleString());
		System.out.println("上月初0點時間：" + getLastMonthStartMorning().toLocaleString());
		System.out.println("本季度開始點時間：" + getCurrentQuarterStartTime().toLocaleString());
		System.out.println("本季度結束點時間：" + getCurrentQuarterEndTime().toLocaleString());
		System.out.println("本年開始點時間：" + getCurrentYearStartTime().toLocaleString());
		System.out.println("本年結束點時間：" + getCurrentYearEndTime().toLocaleString());
		System.out.println("上年開始點時間：" + getLastYearStartTime().toLocaleString());
	}
 
	// 獲得當天0點時間
	public static Date getTimesmorning() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
 
 
	}
	// 獲得昨天0點時間
	public static Date getYesterdaymorning() {
		Calendar cal = Calendar.getInstance();
		cal.setTimeInMillis(getTimesmorning().getTime()-3600*24*1000);
		return cal.getTime();
	}
	// 獲得當天近7天時間
	public static Date getWeekFromNow() {
		Calendar cal = Calendar.getInstance();
		cal.setTimeInMillis( getTimesmorning().getTime()-3600*24*1000*7);
		return cal.getTime();
	}
 
	// 獲得當天24點時間
	public static Date getTimesnight() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.HOUR_OF_DAY, 24);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
	}
 
	// 獲得本周一0點時間
	public static Date getTimesWeekmorning() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
		return cal.getTime();
	}
 
	// 獲得本周日24點時間
	public static Date getTimesWeeknight() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getTimesWeekmorning());
		cal.add(Calendar.DAY_OF_WEEK, 7);
		return cal.getTime();
	}
 
	// 獲得本月第一天0點時間
	public static Date getTimesMonthmorning() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.DAY_OF_MONTH));
		return cal.getTime();
	}
 
	// 獲得本月最後一天24點時間
	public static Date getTimesMonthnight() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
		cal.set(Calendar.HOUR_OF_DAY, 24);
		return cal.getTime();
	}
 
	public static Date getLastMonthStartMorning() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getTimesMonthmorning());
		cal.add(Calendar.MONTH, -1);
		return cal.getTime();
	}
 
	public static Date getCurrentQuarterStartTime() {
		Calendar c = Calendar.getInstance();
		int currentMonth = c.get(Calendar.MONTH) + 1;
		SimpleDateFormat longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		SimpleDateFormat shortSdf = new SimpleDateFormat("yyyy-MM-dd");
		Date now = null;
		try {
			if (currentMonth >= 1 && currentMonth <= 3)
				c.set(Calendar.MONTH, 0);
			else if (currentMonth >= 4 && currentMonth <= 6)
				c.set(Calendar.MONTH, 3);
			else if (currentMonth >= 7 && currentMonth <= 9)
				c.set(Calendar.MONTH, 4);
			else if (currentMonth >= 10 && currentMonth <= 12)
				c.set(Calendar.MONTH, 9);
			c.set(Calendar.DATE, 1);
			now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
		} catch (Exception e) {
			e.printStackTrace();
		}
		return now;
	}
 
	/**
	 * 當前季度的結束時間，即2012-03-31 23:59:59
	 *
	 * @return
	 */
	public static Date getCurrentQuarterEndTime() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getCurrentQuarterStartTime());
		cal.add(Calendar.MONTH, 3);
		return cal.getTime();
	}
 
 
	public static Date getCurrentYearStartTime() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.YEAR));
		return cal.getTime();
	}
 
	public static Date getCurrentYearEndTime() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getCurrentYearStartTime());
		cal.add(Calendar.YEAR, 1);
		return cal.getTime();
	}
 
	public static Date getLastYearStartTime() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getCurrentYearStartTime());
		cal.add(Calendar.YEAR, -1);
		return cal.getTime();
	}
 
}

　　輸出結果：

當天24點時間：2015-1-18 0:00:00
當前時間：2015-1-17 10:50:57
當天0點時間：2015-1-17 0:00:00
昨天0點時間：2015-1-16 0:00:00
近7天時間：2015-1-10 0:00:00
本周周一0點時間：2015-1-12 0:00:00
本周周日24點時間：2015-1-19 0:00:00
本月初0點時間：2015-1-1 0:00:00
本月未24點時間：2015-2-1 0:00:00
上月初0點時間：2014-12-1 0:00:00
本季度開始點時間：2015-1-1 0:00:00
本季度結束點時間：2015-4-1 0:00:00
本年開始點時間：2015-1-1 0:00:00
本年結束點時間：2016-1-1 0:00:00
上年開始點時間：2014-1-1 0:00:00

　　本文摘自：https://blog.csdn.net/whzhaochao/article/details/40186805

Java獲取當天、本周、本月、本季度、本年等 開始及結束時間