21.3

java.util.Date

THE PACKAGE JAVA.UTIL

zzz

 is the time zone (and may reflect daylight saving time). Standard time

zone abbreviations include those recognized by the method

parse

 ( 21.3.31).

If time zone information is not available, then

zzz

 is empty that is, it con 

sists of no characters at all.

yyyy

 is the year, as four decimal digits.

See also methods

toLocaleString

 ( 21.3.27) and

toGMTString

 ( 21.3.28).

Overrides the

toString

 method of

Object

 ( 20.1.2).

21.3.8

public boolean equals(Object obj)

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

Date

 object. Thus

two

Date

 objects are equal if and only if the

getTime

 method ( 21.3.23) returns

the same

long

 value from both.

Overrides the

equals

 method of

Object

 ( 20.1.3).

21.3.9

public int hashCode()

The result is the exclusive OR of the two halves of the primitive

long

 value

returned by the

getTime

 method ( 21.3.23). That is, the hash code is the value of

the expression:

(int)(this.getTime()^(this.getTime()>>>32))

Overrides the

hashCode

 method of

Object

 ( 20.1.4).

21.3.10

public int getYear()

The returned value 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.

21.3.11

public void setYear(int year)

This

Date

 object is modified so that it represents a point in time within the speci 

fied 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.)

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