Java-API：java.util.Date

Posted 2021-02-14 storebook

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Java-API：java.util.Date相关的知识，希望对你有一定的参考价值。

ylbtech-Java-API：java.util.Date

java.lang.Object
- java.util.Date

All Implemented Interfaces:
Serializable, Cloneable, Comparable<Date>
Direct Known Subclasses:
Date, Time, Timestamp

1.返回顶部

1、

Constructor Summary

Constructors
Constructor	Description
`Date()`	Allocates a `Date` object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.
`Date?(int year, int month, int date)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(year + 1900, month, date)` or `GregorianCalendar(year + 1900, month, date)`.
`Date?(int year, int month, int date, int hrs, int min)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(year + 1900, month, date, hrs, min)` or `GregorianCalendar(year + 1900, month, date, hrs, min)`.
`Date?(int year, int month, int date, int hrs, int min, int sec)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(year + 1900, month, date, hrs, min, sec)` or `GregorianCalendar(year + 1900, month, date, hrs, min, sec)`.
`Date?(long date)`	Allocates a `Date` object and initializes it to represent the specified number of milliseconds since the standard base time known as "the epoch", namely January 1, 1970, 00:00:00 GMT.
`Date?(String s)`	Deprecated. As of JDK version 1.1, replaced by `DateFormat.parse(String s)`.

Method Summary

All MethodsStatic MethodsInstance MethodsConcrete MethodsDeprecated Methods
Modifier and Type	Method	Description
`boolean`	`after?(Date when)`	Tests if this date is after the specified date.
`boolean`	`before?(Date when)`	Tests if this date is before the specified date.
`Object`	`clone()`	Return a copy of this object.
`int`	`compareTo?(Date anotherDate)`	Compares two Dates for ordering.
`boolean`	`equals?(Object obj)`	Compares two dates for equality.
`static Date`	`from?(Instant instant)`	Obtains an instance of `Date` from an `Instant` object.
`int`	`getDate()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.DAY_OF_MONTH)`.
`int`	`getDay()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.DAY_OF_WEEK)`.
`int`	`getHours()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.HOUR_OF_DAY)`.
`int`	`getMinutes()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.MINUTE)`.
`int`	`getMonth()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.MONTH)`.
`int`	`getSeconds()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.SECOND)`.
`long`	`getTime()`	Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this `Date` object.
`int`	`getTimezoneOffset()`	Deprecated. As of JDK version 1.1, replaced by `-(Calendar.get(Calendar.ZONE_OFFSET) + Calendar.get(Calendar.DST_OFFSET)) / (60 * 1000)`.
`int`	`getYear()`	Deprecated. As of JDK version 1.1, replaced by `Calendar.get(Calendar.YEAR) - 1900`.
`int`	`hashCode()`	Returns a hash code value for this object.
`static long`	`parse?(String s)`	Deprecated. As of JDK version 1.1, replaced by `DateFormat.parse(String s)`.
`void`	`setDate?(int date)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.DAY_OF_MONTH, int date)`.
`void`	`setHours?(int hours)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.HOUR_OF_DAY, int hours)`.
`void`	`setMinutes?(int minutes)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.MINUTE, int minutes)`.
`void`	`setMonth?(int month)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.MONTH, int month)`.
`void`	`setSeconds?(int seconds)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.SECOND, int seconds)`.
`void`	`setTime?(long time)`	Sets this `Date` object to represent a point in time that is `time` milliseconds after January 1, 1970 00:00:00 GMT.
`void`	`setYear?(int year)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(Calendar.YEAR, year + 1900)`.
`String`	`toGMTString()`	Deprecated. As of JDK version 1.1, replaced by `DateFormat.format(Date date)`, using a GMT `TimeZone`.
`Instant`	`toInstant()`	Converts this `Date` object to an `Instant`.
`String`	`toLocaleString()`	Deprecated. As of JDK version 1.1, replaced by `DateFormat.format(Date date)`.
`String`	`toString()`	Converts this `Date` object to a `String` of the form:
`static long`	`UTC?(int year, int month, int date, int hrs, int min, int sec)`	Deprecated. As of JDK version 1.1, replaced by `Calendar.set(year + 1900, month, date, hrs, min, sec)` or `GregorianCalendar(year + 1900, month, date, hrs, min, sec)`, using a UTC `TimeZone`, followed by `Calendar.getTime().getTime()`.