public Date()
Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.
System.currentTimeMillis()
public 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 - the milliseconds since January 1, 1970, 00:00:00 GMT.
System.currentTimeMillis()
@Deprecated public Date(int year, int month, int date)
Allocates a Date object and initializes it so that it represents midnight, local time, at the beginning of the day specified by the year, month, and date arguments.
year - the year minus 1900.
month - the month between 0-11.
date - the day of the month between 1-31.
Calendar
@Deprecated public Date(int year, int month, int date, int hrs, int min)
Allocates a Date object and initializes it so that it represents the instant at the start of the minute specified by the year, month, date, hrs, and min arguments, in the local time zone.
year - the year minus 1900.
month - the month between 0-11.
date - the day of the month between 1-31.
hrs - the hours between 0-23.
min - the minutes between 0-59.
Calendar
@Deprecated public Date(int year, int month, int date, int hrs, int min, int sec)
Allocates a Date object and initializes it so that it represents the instant at the start of the second specified by the year, month, date, hrs, min, and sec arguments, in the local time zone.
year - the year minus 1900.
month - the month between 0-11.
date - the day of the month between 1-31.
hrs - the hours between 0-23.
min - the minutes between 0-59.
sec - the seconds between 0-59.
Calendar
@Deprecated public Date(String s)
Allocates a
Date
object and initializes it so that it represents the date and time indicated by the string
s
, which is interpreted as if by the
parse(java.lang.String)
method.
s - a string representation of the date.
DateFormat, parse(java.lang.String)
public Object clone()
Return a copy of this object.
@Deprecated public static long UTC(int year, int month, int date, int hrs, int min, int sec)
Determines the date and time based on the arguments. The arguments are interpreted as a year, month, day of the month, hour of the day, minute within the hour, and second within the minute, exactly as for the Date constructor with six arguments, except that the arguments are interpreted relative to UTC rather than to the local time zone. The time indicated is returned represented as the distance, measured in milliseconds, of that time from the epoch (00:00:00 GMT on January 1, 1970).
year - the year minus 1900.
month - the month between 0-11.
date - the day of the month between 1-31.
hrs - the hours between 0-23.
min - the minutes between 0-59.
sec - the seconds between 0-59.
Calendar
@Deprecated public static long parse(String s)
Attempts to interpret the string
s
as a representation of a date and time. If the attempt is successful, the time indicated is returned represented as the distance, measured in milliseconds, of that time from the epoch (00:00:00 GMT on January 1, 1970). If the attempt fails, an
IllegalArgumentException
is thrown.
It accepts many syntaxes; in particular, it recognizes the IETF standard date syntax: "Sat, 12 Aug 1995 13:30:00 GMT". It also understands the continental U.S. time-zone abbreviations, but for general use, a time-zone offset should be used: "Sat, 12 Aug 1995 13:30:00 GMT+0430" (4 hours, 30 minutes west of the Greenwich meridian). If no time zone is specified, the local time zone is assumed. GMT and UTC are considered equivalent.
The string s is processed from left to right, looking for data of interest. Any material in s that is within the ASCII parenthesis characters ( and ) is ignored. Parentheses may be nested. Otherwise, the only characters permitted within s are these ASCII characters:
abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789,+-:/
and whitespace characters.
A consecutive sequence of decimal digits is treated as a decimal number:
+ or - and a year has already been recognized, then the number is a time-zone offset. If the number is less than 24, it is an offset measured in hours. Otherwise, it is regarded as an offset in minutes, expressed in 24-hour time format without punctuation. A preceding - means a westward offset. Time zone offsets are always relative to UTC (Greenwich). Thus, for example, -5 occurring in the string would mean "five hours west of Greenwich" and +0430 would mean "four hours and thirty minutes east of Greenwich." It is permitted for the string to specify GMT, UT, or UTC redundantly-for example, GMT-5 or utc+0430.SimpleDateFormat.0 to 11), unless a month has already been recognized, in which case it is regarded as a day of the month.A consecutive sequence of letters is regarded as a word and treated as follows:
AM, ignoring case, is ignored (but the parse fails if an hour has not been recognized or is less than 1 or greater than 12).PM, ignoring case, adds 12 to the hour (but the parse fails if an hour has not been recognized or is less than 1 or greater than 12).SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, or SATURDAY, ignoring case, is ignored. For example, sat, Friday, TUE, and Thurs are ignored.JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, or DECEMBER, ignoring case, and considering them in the order given here, is recognized as specifying a month and is converted to a number (0 to 11). For example, aug, Sept, april, and NOV are recognized as months. So is Ma, which is recognized as MARCH, not MAY.GMT, UT, or UTC, ignoring case, is treated as referring to UTC.EST, CST, MST, or PST, ignoring case, is recognized as referring to the time zone in North America that is five, six, seven, or eight hours west of Greenwich, respectively. Any word that matches EDT, CDT, MDT, or PDT, ignoring case, is recognized as referring to the same time zone, respectively, during daylight saving time.Once the entire string s has been scanned, it is converted to a time result in one of two ways. If a time zone or time-zone offset has been recognized, then the year, month, day of month, hour, minute, and second are interpreted in UTC and then the time-zone offset is applied. Otherwise, the year, month, day of month, hour, minute, and second are interpreted in the local time zone.
s - a string to be parsed as a date.
DateFormat
@Deprecated public int getYear()
Returns a value that is the result of subtracting 1900 from the year that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone.
Calendar
@Deprecated public void setYear(int year)
Sets the year of this Date object to be the specified value plus 1900. This Date object is modified so that it represents a point in time within the specified year, with the month, date, hour, minute, and second the same as before, as interpreted in the local time zone. (Of course, if the date was February 29, for example, and the year is set to a non-leap year, then the new date will be treated as if it were on March 1.)
year - the year value.
Calendar
@Deprecated public int getMonth()
Returns a number representing the month that contains or begins with the instant in time represented by this Date object. The value returned is between 0 and 11, with the value 0 representing January.
Calendar
@Deprecated public void setMonth(int month)
Sets the month of this date to the specified value. This Date object is modified so that it represents a point in time within the specified month, with the year, date, hour, minute, and second the same as before, as interpreted in the local time zone. If the date was October 31, for example, and the month is set to June, then the new date will be treated as if it were on July 1, because June has only 30 days.
month - the month value between 0-11.
Calendar
@Deprecated public int getDate()
Returns the day of the month represented by this Date object. The value returned is between 1 and 31 representing the day of the month that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone.
Calendar
@Deprecated public void setDate(int date)
Sets the day of the month of this Date object to the specified value. This Date object is modified so that it represents a point in time within the specified day of the month, with the year, month, hour, minute, and second the same as before, as interpreted in the local time zone. If the date was April 30, for example, and the date is set to 31, then it will be treated as if it were on May 1, because April has only 30 days.
date - the day of the month value between 1-31.
Calendar
@Deprecated public int getDay()
Returns the day of the week represented by this date. The returned value (0 = Sunday, 1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday, 6 = Saturday) represents the day of the week that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone.
Calendar
@Deprecated public int getHours()
Returns the hour represented by this Date object. The returned value is a number (0 through 23) representing the hour within the day that contains or begins with the instant in time represented by this Date object, as interpreted in the local time zone.
Calendar
@Deprecated public void setHours(int hours)
Sets the hour of this Date object to the specified value. This Date object is modified so that it represents a point in time within the specified hour of the day, with the year, month, date, minute, and second the same as before, as interpreted in the local time zone.
hours - the hour value.
Calendar
@Deprecated public int getMinutes()
Returns the number of minutes past the hour represented by this date, as interpreted in the local time zone. The value returned is between 0 and 59.
Calendar
@Deprecated public void setMinutes(int minutes)
Sets the minutes of this Date object to the specified value. This Date object is modified so that it represents a point in time within the specified minute of the hour, with the year, month, date, hour, and second the same as before, as interpreted in the local time zone.
minutes - the value of the minutes.
Calendar
@Deprecated public int getSeconds()
Returns the number of seconds past the minute represented by this date. The value returned is between 0 and 61. The values 60 and 61 can only occur on those Java Virtual Machines that take leap seconds into account.
Calendar
@Deprecated public void setSeconds(int seconds)
Sets the seconds of this Date to the specified value. This Date object is modified so that it represents a point in time within the specified second of the minute, with the year, month, date, hour, and minute the same as before, as interpreted in the local time zone.
seconds - the seconds value.
Calendar
public long getTime()
Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object.
public 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.
time - the number of milliseconds.
public boolean before(Date when)
Tests if this date is before the specified date.
when - a date.
true if and only if the instant of time represented by this Date object is strictly earlier than the instant represented by when; false otherwise.
NullPointerException - if when is null.
public boolean after(Date when)
Tests if this date is after the specified date.
when - a date.
true if and only if the instant represented by this Date object is strictly later than the instant represented by when; false otherwise.
NullPointerException - if when is null.
public boolean equals(Object obj)
Compares two dates for equality. The result is
true
if and only if the argument is not
null
and is a
Date
object that represents the same point in time, to the millisecond, as this object.
Thus, two Date objects are equal if and only if the getTime method returns the same long value for both.
public int compareTo(Date anotherDate)
Compares two Dates for ordering.
compareTo in interface Comparable<Date>
anotherDate - the Date to be compared.
0 if the argument Date is equal to this Date; a value less than 0 if this Date is before the Date argument; and a value greater than 0 if this Date is after the Date argument.
NullPointerException - if anotherDate is null.
public int hashCode()
Returns a hash code value for this object. The result is the exclusive OR of the two halves of the primitive
long
value returned by the
getTime()
method. That is, the hash code is the value of the expression:
(int)(this.getTime()^(this.getTime() >>> 32))
hashCode in class Object
Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
public String toString()
Converts this
Date
object to a
String
of the form:
dow mon dd hh:mm:ss zzz yyyy
where:
dow is the day of the week (Sun, Mon, Tue, Wed, Thu, Fri, Sat).mon is the month (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec).dd is the day of the month (01 through 31), as two decimal digits.hh is the hour of the day (00 through 23), as two decimal digits.mm is the minute within the hour (00 through 59), as two decimal digits.ss is the second within the minute (00 through 61, as two decimal digits.zzz is the time zone (and may reflect daylight saving time). Standard time zone abbreviations include those recognized by the method parse. If time zone information is not available, then zzz is empty - that is, it consists of no characters at all.yyyy is the year, as four decimal digits.toString in class Object
toLocaleString(), toGMTString()
@Deprecated public String toLocaleString()
Creates a string representation of this Date object in an implementation-dependent form. The intent is that the form should be familiar to the user of the Java application, wherever it may happen to be running. The intent is comparable to that of the "%c" format supported by the strftime() function of ISO C.
DateFormat, toString(), toGMTString()
@Deprecated public String toGMTString()
Creates a string representation of this
Date
object of the form:
d mon yyyy hh:mm:ss GMT
where:
1 through 31), as one or two decimal digits.Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec).00 through 23), as two decimal digits.00 through 59), as two decimal digits.00 through 61), as two decimal digits.GMT" to indicate Greenwich Mean Time.The result does not depend on the local time zone.
DateFormat, toString(), toLocaleString()
@Deprecated public int getTimezoneOffset()
Returns the offset, measured in minutes, for the local time zone relative to UTC that is appropriate for the time represented by this
Date
object.
For example, in Massachusetts, five time zones west of Greenwich:
new Date(96, 1, 14).getTimezoneOffset() returns 300
because on February 14, 1996, standard time (Eastern Standard Time) is in use, which is offset five hours from UTC; but:
new Date(96, 5, 1).getTimezoneOffset() returns 240
because on June 1, 1996, daylight saving time (Eastern Daylight Time) is in use, which is offset only four hours from UTC.
This method produces the same result as if it computed:
(this.getTime() - UTC(this.getYear(),
this.getMonth(),
this.getDate(),
this.getHours(),
this.getMinutes(),
this.getSeconds())) / (60 * 1000)
Calendar.ZONE_OFFSET, Calendar.DST_OFFSET, TimeZone.getDefault()
public static Date from(Instant instant)
Obtains an instance of
Date
from an
Instant
object.
Instant uses a precision of nanoseconds, whereas Date uses a precision of milliseconds. The conversion will truncate any excess precision information as though the amount in nanoseconds was subject to integer division by one million.
Instant can store points on the time-line further in the future and further in the past than Date. In this scenario, this method will throw an exception.
instant - the instant to convert
Date representing the same point on the time-line as the provided instant
NullPointerException - if instant is null.
IllegalArgumentException - if the instant is too large to represent as a Date
public Instant toInstant()
Converts this
Date
object to an
Instant
.
The conversion creates an Instant that represents the same point on the time-line as this Date.
Date object
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