DateUtil (vjkit 1.0.8 API)

java.lang.Object
- com.vip.vjtools.vjkit.time.DateUtil

```
public class DateUtil
extends Object
```
日期工具类. 在不方便使用joda-time时，使用本类降低Date处理的复杂度与性能消耗, 封装Common Lang及移植Jodd的最常用日期方法

Field Summary

Fields
Modifier and Type Field and Description

static long MILLIS_PER_DAY

static long MILLIS_PER_HOUR

static long MILLIS_PER_MINUTE

static long MILLIS_PER_SECOND

Fields
Modifier and Type	Field and Description
`static long`	`MILLIS_PER_DAY`
`static long`	`MILLIS_PER_HOUR`
`static long`	`MILLIS_PER_MINUTE`
`static long`	`MILLIS_PER_SECOND`

Constructor Summary

Constructors
Constructor and Description

DateUtil()

Constructors
Constructor and Description
`DateUtil()`

Method Summary

Methods
Modifier and Type	Method and Description
`static Date`	`addDays(Date date, int amount)` 加一天
`static Date`	`addHours(Date date, int amount)` 加一小时
`static Date`	`addMinutes(Date date, int amount)` 加一分钟
`static Date`	`addMonths(Date date, int amount)` 加一月
`static Date`	`addSeconds(Date date, int amount)` 终于到了，续一秒.
`static Date`	`addWeeks(Date date, int amount)` 加一周
`static Date`	`beginOfDate(Date date)` 2016-11-10 07:33:23, 则返回2016-11-10 00:00:00
`static Date`	`beginOfHour(Date date)` 2016-12-10 07:33:23, 则返回2016-12-10 07:00:00
`static Date`	`beginOfMinute(Date date)` 2016-12-10 07:33:23, 则返回2016-12-10 07:33:00
`static Date`	`beginOfMonth(Date date)` 2016-11-10 07:33:23, 则返回2016-11-1 00:00:00
`static Date`	`beginOfWeek(Date date)` 2017-1-20 07:33:23, 则返回2017-1-16 00:00:00
`static Date`	`beginOfYear(Date date)` 2016-11-10 07:33:23, 则返回2016-1-1 00:00:00
`static Date`	`endOfDate(Date date)` 2017-1-23 07:33:23, 则返回2017-1-23 23:59:59.999
`static Date`	`endOfHour(Date date)` 2017-1-23 07:33:23, 则返回2017-1-23 07:59:59.999
`static Date`	`endOfMinute(Date date)` 2017-1-23 07:33:23, 则返回2017-1-23 07:33:59.999
`static Date`	`endOfMonth(Date date)` 2016-11-10 07:33:23, 则返回2016-11-30 23:59:59.999
`static Date`	`endOfWeek(Date date)` 2017-1-20 07:33:23, 则返回2017-1-22 23:59:59.999
`static Date`	`endOfYear(Date date)` 2016-11-10 07:33:23, 则返回2016-12-31 23:59:59.999
`static int`	`getDayOfWeek(Date date)` 获得日期是一周的第几天.
`static int`	`getDayOfYear(Date date)` 获得日期是一年的第几天，返回值从1开始
`static int`	`getMonthLength(Date date)` 获取某个月有多少天, 考虑闰年等因数, 移植Jodd Core的TimeUtil
`static int`	`getMonthLength(int year, int month)` 获取某个月有多少天, 考虑闰年等因数, 移植Jodd Core的TimeUtil
`static int`	`getWeekOfMonth(Date date)` 获得日期是一月的第几周，返回值从1开始.
`static int`	`getWeekOfYear(Date date)` 获得日期是一年的第几周，返回值从1开始.
`static boolean`	`isBetween(Date date, Date start, Date end)` 判断日期是否在范围内，包含相等的日期
`static boolean`	`isLeapYear(Date date)` 是否闰年.
`static boolean`	`isLeapYear(int y)` 是否闰年，copy from Jodd Core的TimeUtil 参数是公元计数, 如2016
`static boolean`	`isSameDay(Date date1, Date date2)` 是否同一天.
`static boolean`	`isSameTime(Date date1, Date date2)` 是否同一时刻.
`static Date`	`nextDate(Date date)` 2016-11-10 07:33:23, 则返回2016-11-11 00:00:00
`static Date`	`nextHour(Date date)` 2016-12-10 07:33:23, 则返回2016-12-10 08:00:00
`static Date`	`nextMinute(Date date)` 2016-12-10 07:33:23, 则返回2016-12-10 07:34:00
`static Date`	`nextMonth(Date date)` 2016-11-10 07:33:23, 则返回2016-12-1 00:00:00
`static Date`	`nextWeek(Date date)` 2017-1-23 07:33:23, 则返回2017-1-22 00:00:00
`static Date`	`nextYear(Date date)` 2016-11-10 07:33:23, 则返回2017-1-1 00:00:00
`static Date`	`setDays(Date date, int amount)` 设置日期, 1-31.
`static Date`	`setHours(Date date, int amount)` 设置小时, 0-23.
`static Date`	`setMilliseconds(Date date, int amount)` 设置毫秒.
`static Date`	`setMinutes(Date date, int amount)` 设置分钟, 0-59.
`static Date`	`setMonths(Date date, int amount)` 设置月份, 1-12.
`static Date`	`setSeconds(Date date, int amount)` 设置秒, 0-59.
`static Date`	`setYears(Date date, int amount)` 设置年份, 公元纪年.
`static Date`	`subDays(Date date, int amount)` 减一天
`static Date`	`subHours(Date date, int amount)` 减一小时
`static Date`	`subMinutes(Date date, int amount)` 减一分钟
`static Date`	`subMonths(Date date, int amount)` 减一月
`static Date`	`subSeconds(Date date, int amount)` 减一秒.
`static Date`	`subWeeks(Date date, int amount)` 减一周

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- MILLIS_PER_SECOND
```
public static final long MILLIS_PER_SECOND
```
  See Also:
  Constant Field Values
- MILLIS_PER_MINUTE
```
public static final long MILLIS_PER_MINUTE
```
  See Also:
  Constant Field Values
- MILLIS_PER_HOUR
```
public static final long MILLIS_PER_HOUR
```
  See Also:
  Constant Field Values
- MILLIS_PER_DAY
```
public static final long MILLIS_PER_DAY
```
  See Also:
  Constant Field Values

Constructor Detail
- DateUtil
```
public DateUtil()
```

Method Detail

isSameDay

public static boolean isSameDay(Date date1,
                Date date2)

是否同一天.

See Also:: DateUtils.isSameDay(Date, Date)

isSameTime

public static boolean isSameTime(Date date1,
                 Date date2)

是否同一时刻.

isBetween

public static boolean isBetween(Date date,
                Date start,
                Date end)

判断日期是否在范围内，包含相等的日期

addMonths

public static Date addMonths(Date date,
             int amount)

加一月

subMonths

public static Date subMonths(Date date,
             int amount)

减一月

addWeeks

public static Date addWeeks(Date date,
            int amount)

加一周

subWeeks

public static Date subWeeks(Date date,
            int amount)

减一周

addDays

public static Date addDays(Date date,
           int amount)

加一天

subDays

public static Date subDays(Date date,
           int amount)

减一天

addHours

public static Date addHours(Date date,
            int amount)

加一小时

subHours

public static Date subHours(Date date,
            int amount)

减一小时

addMinutes

public static Date addMinutes(Date date,
              int amount)

加一分钟

subMinutes

public static Date subMinutes(Date date,
              int amount)

减一分钟

addSeconds

public static Date addSeconds(Date date,
              int amount)

终于到了，续一秒.

subSeconds

public static Date subSeconds(Date date,
              int amount)

减一秒.

setYears

public static Date setYears(Date date,
            int amount)

设置年份, 公元纪年.

setMonths

public static Date setMonths(Date date,
             int amount)

设置月份, 1-12.

setDays

public static Date setDays(Date date,
           int amount)

设置日期, 1-31.

setHours

public static Date setHours(Date date,
            int amount)

设置小时, 0-23.

setMinutes

public static Date setMinutes(Date date,
              int amount)

设置分钟, 0-59.

setSeconds

public static Date setSeconds(Date date,
              int amount)

设置秒, 0-59.

setMilliseconds

public static Date setMilliseconds(Date date,
                   int amount)

设置毫秒.

getDayOfWeek
```
public static int getDayOfWeek(Date date)
```
获得日期是一周的第几天. 已改为中国习惯，1 是Monday，而不是Sundays.

getDayOfYear
```
public static int getDayOfYear(Date date)
```
获得日期是一年的第几天，返回值从1开始

getWeekOfMonth
```
public static int getWeekOfMonth(Date date)
```
获得日期是一月的第几周，返回值从1开始. 开始的一周，只要有一天在那个月里都算. 已改为中国习惯，1 是Monday，而不是Sunday

getWeekOfYear
```
public static int getWeekOfYear(Date date)
```
获得日期是一年的第几周，返回值从1开始. 开始的一周，只要有一天在那一年里都算.已改为中国习惯，1 是Monday，而不是Sunday

beginOfYear
```
public static Date beginOfYear(Date date)
```
2016-11-10 07:33:23, 则返回2016-1-1 00:00:00

endOfYear
```
public static Date endOfYear(Date date)
```
2016-11-10 07:33:23, 则返回2016-12-31 23:59:59.999

nextYear
```
public static Date nextYear(Date date)
```
2016-11-10 07:33:23, 则返回2017-1-1 00:00:00

beginOfMonth
```
public static Date beginOfMonth(Date date)
```
2016-11-10 07:33:23, 则返回2016-11-1 00:00:00

endOfMonth
```
public static Date endOfMonth(Date date)
```
2016-11-10 07:33:23, 则返回2016-11-30 23:59:59.999

nextMonth
```
public static Date nextMonth(Date date)
```
2016-11-10 07:33:23, 则返回2016-12-1 00:00:00

beginOfWeek
```
public static Date beginOfWeek(Date date)
```
2017-1-20 07:33:23, 则返回2017-1-16 00:00:00

endOfWeek
```
public static Date endOfWeek(Date date)
```
2017-1-20 07:33:23, 则返回2017-1-22 23:59:59.999

nextWeek
```
public static Date nextWeek(Date date)
```
2017-1-23 07:33:23, 则返回2017-1-22 00:00:00

beginOfDate
```
public static Date beginOfDate(Date date)
```
2016-11-10 07:33:23, 则返回2016-11-10 00:00:00

endOfDate
```
public static Date endOfDate(Date date)
```
2017-1-23 07:33:23, 则返回2017-1-23 23:59:59.999

nextDate
```
public static Date nextDate(Date date)
```
2016-11-10 07:33:23, 则返回2016-11-11 00:00:00

beginOfHour
```
public static Date beginOfHour(Date date)
```
2016-12-10 07:33:23, 则返回2016-12-10 07:00:00

endOfHour
```
public static Date endOfHour(Date date)
```
2017-1-23 07:33:23, 则返回2017-1-23 07:59:59.999

nextHour
```
public static Date nextHour(Date date)
```
2016-12-10 07:33:23, 则返回2016-12-10 08:00:00

beginOfMinute
```
public static Date beginOfMinute(Date date)
```
2016-12-10 07:33:23, 则返回2016-12-10 07:33:00

endOfMinute
```
public static Date endOfMinute(Date date)
```
2017-1-23 07:33:23, 则返回2017-1-23 07:33:59.999

nextMinute
```
public static Date nextMinute(Date date)
```
2016-12-10 07:33:23, 则返回2016-12-10 07:34:00

isLeapYear

public static boolean isLeapYear(Date date)

是否闰年.

isLeapYear
```
public static boolean isLeapYear(int y)
```
是否闰年，copy from Jodd Core的TimeUtil 参数是公元计数, 如2016

getMonthLength
```
public static int getMonthLength(Date date)
```
获取某个月有多少天, 考虑闰年等因数, 移植Jodd Core的TimeUtil

getMonthLength
```
public static int getMonthLength(int year,
                 int month)
```
获取某个月有多少天, 考虑闰年等因数, 移植Jodd Core的TimeUtil

Class DateUtil

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MILLIS_PER_SECOND

MILLIS_PER_MINUTE

MILLIS_PER_HOUR

MILLIS_PER_DAY

Constructor Detail

DateUtil

Method Detail

isSameDay

isSameTime

isBetween

addMonths

subMonths

addWeeks

subWeeks

addDays

subDays

addHours

subHours

addMinutes

subMinutes

addSeconds

subSeconds

setYears

setMonths

setDays

setHours

setMinutes

setSeconds

setMilliseconds

getDayOfWeek

getDayOfYear

getWeekOfMonth

getWeekOfYear

beginOfYear

endOfYear

nextYear

beginOfMonth

endOfMonth

nextMonth

beginOfWeek

endOfWeek

nextWeek

beginOfDate

endOfDate

nextDate

beginOfHour

endOfHour

nextHour

beginOfMinute

endOfMinute

nextMinute

isLeapYear

isLeapYear

getMonthLength

getMonthLength