public class TimeUtil {
//获取当天的开始时间
public static Date getDayBegin() {
Calendar cal = new GregorianCalendar();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
//获取当天的结束时间
public static Date getDayEnd() {
Calendar cal = new GregorianCalendar();
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
return cal.getTime();
}
//获取昨天的开始时间
public static Date getBeginDayOfYesterday() {
Calendar cal = new GregorianCalendar();
cal.setTime(getDayBegin());
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.getTime();
}
//获取昨天的结束时间
public static Date getEndDayOfYesterDay() {
Calendar cal = new GregorianCalendar();
cal.setTime(getDayEnd());
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.getTime();
}
//获取明天的开始时间
public static Date getBeginDayOfTomorrow() {
Calendar cal = new GregorianCalendar();
cal.setTime(getDayBegin());
cal.add(Calendar.DAY_OF_MONTH, 1);
return cal.getTime();
}
//获取明天的结束时间
public static Date getEndDayOfTomorrow() {
Calendar cal = new GregorianCalendar();
cal.setTime(getDayEnd());
cal.add(Calendar.DAY_OF_MONTH, 1);
return cal.getTime();
}
//获取本周的开始时间
public static Date getBeginDayOfWeek() {
Calendar cal = Calendar.getInstance();
cal.setFirstDayOfWeek(Calendar.MONDAY);
cal.setTimeInMillis(System.currentTimeMillis());
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
return getDayStartTime(cal.getTime());
}
//获取本周的结束时间
public static Date getEndDayOfWeek() {
Calendar cal = Calendar.getInstance();
cal.setFirstDayOfWeek(Calendar.MONDAY);
cal.setTimeInMillis(System.currentTimeMillis());
cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
return getDayEndTime(cal.getTime());
}
//获取本月的开始时间
public static Date getBeginDayOfMonth() {
Calendar calendar = Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth() - 1, 1);
return getDayStartTime(calendar.getTime());
}
/**
* 获取本月的结束时间
*
* @return
*/
public static Date getEndDayOfMonth() {
Calendar calendar = Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth() - 1, 1);
int day = calendar.getActualMaximum(5);
calendar.set(getNowYear(), getNowMonth() - 1, day);
return getDayEndTime(calendar.getTime());
}
/**
* 获取本月的前三个月
*
* @return
*/
public static Date getBeginDayOfMonth3() {
Calendar calendar = Calendar.getInstance();
calendar.add(calendar.MONTH, -3);
Date dateTemp = calendar.getTime();
calendar.set(getYear(dateTemp), getMonth(dateTemp), 1);
return getDayStartTime(calendar.getTime());
}
/**
* 获取本月的当前日期
*
* @return
*/
public static Date getEndDayOfMonth3() {
// Calendar calendar = Calendar.getInstance();
// int day = calendar.get(Calendar.DAY_OF_MONTH);
// calendar.set(getNowYear(), getNowMonth() - 1, day);
// return getDayEndTime(calendar.getTime());
return getEndDayOfMonth();
}
//获取本年的开始时间
public static java.util.Date getBeginDayOfYear() {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
// cal.set
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DATE, 1);
return getDayStartTime(cal.getTime());
}
//获取本年的结束时间
public static java.util.Date getEndDayOfYear() {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
cal.set(Calendar.MONTH, Calendar.DECEMBER);
cal.set(Calendar.DATE, 31);
return getDayEndTime(cal.getTime());
}
//获取某个日期的开始时间
public static Timestamp getDayStartTime(Date d) {
Calendar calendar = Calendar.getInstance();
if (null != d) calendar.setTime(d);
calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
calendar.set(Calendar.MILLISECOND, 0);
return new Timestamp(calendar.getTimeInMillis());
}
//获取某个日期的结束时间
public static Timestamp getDayEndTime(Date d) {
Calendar calendar = Calendar.getInstance();
if (null != d) calendar.setTime(d);
calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
calendar.set(Calendar.MILLISECOND, 999);
return new Timestamp(calendar.getTimeInMillis());
}
/**
* 获取今年是哪一年
*
* @return
*/
public static Integer getNowYear() {
Date date = new Date();
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(date);
return Integer.valueOf(gc.get(1));
}
/**
* 获取本月是哪一月
*
* @return
*/
public static int getNowMonth() {
Date date = new Date();
GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
gc.setTime(date);
return gc.get(2) + 1;
}
/**
* 两个日期相减得到的天数
*
* @return
*/
public static int getDiffDays(Date beginDate, Date endDate) {
if (beginDate == null || endDate == null) {
throw new IllegalArgumentException("getDiffDays param is null!");
}
long diff = (endDate.getTime() - beginDate.getTime())
/ (1000 * 60 * 60 * 24);
int days = new Long(diff).intValue();
return days;
}
/**
* 两个日期相减得到的毫秒数
*
* @param beginDate
* @param endDate
* @return
*/
public static long dateDiff(Date beginDate, Date endDate) {
long date1ms = beginDate.getTime();
long date2ms = endDate.getTime();
return date2ms - date1ms;
}
/**
* 获取两个日期中的最大日期
*
* @param beginDate
* @param endDate
* @return
*/
public static Date max(Date beginDate, Date endDate) {
if (beginDate == null) {
return endDate;
}
if (endDate == null) {
return beginDate;
}
if (beginDate.after(endDate)) {
return beginDate;
}
return endDate;
}
//获取两个日期中的最小日期
public static Date min(Date beginDate, Date endDate) {
if (beginDate == null) {
return endDate;
}
if (endDate == null) {
return beginDate;
}
if (beginDate.after(endDate)) {
return endDate;
}
return beginDate;
}
//返回某月该季度的第一个月
public static Date getFirstSeasonDate(Date date) {
final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4};
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int sean = SEASON[cal.get(Calendar.MONTH)];
cal.set(Calendar.MONTH, sean * 3 - 3);
return cal.getTime();
}
//返回某个日期下几天的日期
public static Date getNextDay(Date date, int i) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
return cal.getTime();
}
//返回某个日期前几天的日期
public static Date getFrontDay(Date date, int i) {
Calendar cal = new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
return cal.getTime();
}
//获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
public static List getTimeList(int beginYear, int beginMonth, int endYear,
int endMonth, int k) {
List list = new ArrayList();
if (beginYear == endYear) {
for (int j = beginMonth; j <= endMonth; j++) {
list.add(getTimeList(beginYear, j, k));
}
} else {
{
for (int j = beginMonth; j < 12; j++) {
list.add(getTimeList(beginYear, j, k));
}
for (int i = beginYear + 1; i < endYear; i++) {
for (int j = 0; j < 12; j++) {
list.add(getTimeList(i, j, k));
}
}
for (int j = 0; j <= endMonth; j++) {
list.add(getTimeList(endYear, j, k));
}
}
}
return list;
}
//获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
public static List getTimeList(int beginYear, int beginMonth, int k) {
List list = new ArrayList();
Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
int max = begincal.getActualMaximum(Calendar.DATE);
for (int i = 1; i < max; i = i + k) {
list.add(begincal.getTime());
begincal.add(Calendar.DATE, k);
}
begincal = new GregorianCalendar(beginYear, beginMonth, max);
list.add(begincal.getTime());
return list;
}
public static int[] formatDate(Date date) {
String dateStr = formatDate(date, "yyyy-MM-dd");
String[] dates = dateStr.split("-");
int[] result = new int[3];
if (dates != null && dates.length == 3) {
result[0] = MNumberUtil.convertToint(dates[0]);
result[1] = MNumberUtil.convertToint(dates[1]);
result[2] = MNumberUtil.convertToint(dates[2]);
}
return result;
}
/**
* 将Date类型转换为日期字符串
*
* @param date Date对象
* @param type 需要的日期格式(yyyy-MM-dd HH:mm:ss)
* @return 按照需求格式的日期字符串
*/
public static String formatDate(Date date, String type) {
try {
SimpleDateFormat df = new SimpleDateFormat(type);
return df.format(date);
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
/**
* 某月最后一天
*
* @param year
* @param month
* @return
*/
public static int getLastDayOfMonth(int year, int month) {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month - 1);
int lastDay = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
cal.set(Calendar.DAY_OF_MONTH, lastDay);
return lastDay;
}
/**
* 获得指定日期前几个月相差多少天（包含当天的）
*
* @param startDate
* @param month
* @return
*/
public static int getDiffDays(Date startDate, int month) {
Date date = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(calendar.MONTH, -month);
Date afterTime = calendar.getTime();
calendar.setTime(afterTime);
calendar.add(calendar.DAY_OF_MONTH, +1);
Date realTime = calendar.getTime();
int diffDays = getDiffDays(realTime, startDate);
return diffDays;
}
/**
* 获得指定日期前几年相差多少天（包含当天的）
*
* @param startDate
* @param year
* @return
*/
public static int getDiffDaysWithYear(Date startDate, int year) {
Date date = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(calendar.YEAR, -year);
Date afterTime = calendar.getTime();
calendar.setTime(afterTime);
calendar.add(calendar.DAY_OF_YEAR, +1);
Date realTime = calendar.getTime();
int diffDays = getDiffDays(realTime, startDate);
return diffDays;
}
/**
* 得到年
*
* @param date Date对象
* @return 年
*/
public static int getYear(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.get(Calendar.YEAR);
}
/**
* 得到月
*
* @param date Date对象
* @return 月
*/
public static int getMonth(Date date) {
Calendar c = Calendar.getInstance();
c.setTime(date);
return c.get(Calendar.MONTH) + 1;
}
}
Android 获取时间的工具类
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转载自blog.csdn.net/baliang8/article/details/81236783
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