Типы для времени и денег. Дата и время презентация

static long currentTimeMillis()
public static long nanoTime()
}

C

{

DateFormat formatter = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss z");
long current = System.currentTimeMillis();

System.out.println("Current time in milliseconds since 01.01.1970: " + current);
System.out.println(formatter.format(current));
}
}

Current time in milliseconds since 01.01.1970: 1326621450000
2012.01.15 16:57:30 NOVT

InterruptedException {

for (int i = 0; i < 5; i++) {

System.out.println("Doing something...");
Thread.sleep(1000);
}
}

public static void main(String[] args) throws InterruptedException {

long startTime = System.currentTimeMillis();

doSomething();

long endTime = System.currentTimeMillis();

long totalTime = endTime - startTime;
System.out.println("It took " + (totalTime / 1000)
+ " seconds to do something");
}
}

Doing something...
Doing something...
Doing something...
Doing something...
Doing something...
It took 5 seconds to do something

{

DateFormat formatter = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss z Z");

long zero = 0;

formatter.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
System.out.println(formatter.format(zero));

formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
System.out.println(formatter.format(zero));

formatter.setTimeZone(TimeZone.getTimeZone("Asia/Novosibirsk"));
System.out.println(formatter.format(zero));
}
}

1969.12.31 16:00:00 PST -0800
1970.01.01 00:00:00 GMT +0000
1970.01.01 07:00:00 NOVT +0700

private transient long fastTime;

public Date() {
this(System.currentTimeMillis() );
}

public Date(long date) {
fastTime = date;
}

public long getTime()
public boolean after(Date when)
public boolean before(Date when)

public Object clone()
public int compareTo(Date anotherDate)
public boolean equals(Object obj)
public String toString()
}

C

fastTime

fastTime

System.currentTimeMillis()

main(String[] args) {

DateFormat formatter = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss z");
Date current = new Date();


System.out.println("Current time in milliseconds since 01.01.1970: " + current.getTime());
System.out.println(formatter.format(current));
}
}

Current time in milliseconds since 01.01.1970: 1326621450000
2012.01.15 16:57:30 NOVT

args) {

String[] IDs = TimeZone.getAvailableIDs();

for (String id : IDs) {
System.out.println(id);
}
}
}

Etc/GMT+12
Etc/GMT+11
Pacific/Midway
Pacific/Niue
Pacific/Pago_Pago
Pacific/Samoa
US/Samoa
America/Adak
America/Atka
Etc/GMT+10
HST
Pacific/Honolulu
...
Pacific/Apia
Pacific/Enderbury
Pacific/Fakaofo
Pacific/Tongatapu
Etc/GMT-14
Pacific/Kiritimati

void main(String[] args) throws ParseException {

TimeZone timeZone = TimeZone.getTimeZone("Europe/Moscow");

System.out.println(timeZone);

System.out.println(timeZone.getDisplayName());
System.out.println(timeZone.getID());
System.out.println("Current offset: " + timeZone.getOffset(System.currentTimeMillis())/60/60/1000);
System.out.println("Offset on January 1st 1970: " + timeZone.getOffset(0)/60/60/1000);
}
}

sun.util.calendar.ZoneInfo[id="Europe/Moscow",offset=14400000,dstSavings=0,useDaylight=false,transitions=78,lastRule=null]
Moscow Standard Time
Europe/Moscow
Current offset: 4
Offset on January 1st 1970: 3

main(String[] args) {

SimpleDateFormat simpleFormat = new SimpleDateFormat("EEEE, dd MMMM yyyy HH:mm:ss zzzz");
TimeZone zone = TimeZone.getTimeZone("Europe/Moscow");
simpleFormat.setTimeZone(zone);

Calendar calendar = new GregorianCalendar();
calendar.setTimeZone(zone);

calendar.set(2010, 2, 28, 2, 0, 0);
calendar.set(Calendar.MILLISECOND,0);

System.out.println(calendar.getTime().getTime());
System.out.println(simpleFormat.format(calendar.getTime()));

calendar.set(2010, 2, 28, 3, 0, 0);
calendar.set(Calendar.MILLISECOND,0);

System.out.println(calendar.getTime().getTime());
}
}

1269730800000
Sunday, 28 March 2010 03:00:00 Moscow Daylight Time
1269730800000

main(String[] args) {

SimpleDateFormat simpleFormat = new SimpleDateFormat(
"EEEE, dd MMMM yyyy HH:mm:ss zzzz");
TimeZone zone = TimeZone.getTimeZone("Europe/Moscow");
simpleFormat.setTimeZone(zone);

Calendar calendar = new GregorianCalendar();
calendar.setTimeZone(zone);

calendar.set(2010, 9, 31, 1, 0, 0);
calendar.set(Calendar.MILLISECOND, 0);

long time = calendar.getTime().getTime();

for (int i = 0; i < 10; i++) {
System.out.println(simpleFormat.format(time + i*20*60*1000) + " " + (time + i*20*60*1000));
}
}
}

Sunday, 31 October 2010 01:00:00 Moscow Daylight Time 1288472400000
Sunday, 31 October 2010 01:20:00 Moscow Daylight Time 1288473600000
Sunday, 31 October 2010 01:40:00 Moscow Daylight Time 1288474800000
Sunday, 31 October 2010 02:00:00 Moscow Daylight Time 1288476000000
Sunday, 31 October 2010 02:20:00 Moscow Daylight Time 1288477200000
Sunday, 31 October 2010 02:40:00 Moscow Daylight Time 1288478400000
Sunday, 31 October 2010 02:00:00 Moscow Standard Time 1288479600000
Sunday, 31 October 2010 02:20:00 Moscow Standard Time 1288480800000
Sunday, 31 October 2010 02:40:00 Moscow Standard Time 1288482000000
Sunday, 31 October 2010 03:00:00 Moscow Standard Time 1288483200000

protected long time;

public final Date getTime() {
return new Date(getTimeInMillis());
}

public final void setTime(Date date){
setTimeInMillis(date.getTime());
}

public long getTimeInMillis()
public void setTimeInMillis(long millis)
}

time

C

A

protected int fields[];

public final static int ERA = 0;
public final static int YEAR = 1;
public final static int MONTH = 2;
public final static int WEEK_OF_YEAR = 3;
public final static int WEEK_OF_MONTH = 4;
public final static int DATE = 5;
public final static int DAY_OF_MONTH = 5;
public final static int DAY_OF_YEAR = 6;
public final static int DAY_OF_WEEK = 7;
public final static int DAY_OF_WEEK_IN_MONTH = 8;
public final static int AM_PM = 9;
public final static int HOUR = 10;
public final static int HOUR_OF_DAY = 11;
public final static int MINUTE = 12;
public final static int SECOND = 13;
public final static int MILLISECOND = 14;
public final static int ZONE_OFFSET = 15;

public void set(int field, int value)
public int get(int field)

abstract public void add(int field, int amount)

abstract public void roll(int field, int amount)
}

public GregorianCalendar() {
this(TimeZone.getDefault(), Locale.getDefault());
}

public GregorianCalendar(TimeZone zone) {
this(zone, Locale.getDefault());
}

public GregorianCalendar(Locale locale) {
this(TimeZone.getDefault(), locale);
}

public GregorianCalendar(TimeZone zone, Locale locale) {
this(zone, locale, false);
setTimeInMillis(System.currentTimeMillis());
}

public GregorianCalendar(int year, int month, int day, int hour, int minute, int second){
this(TimeZone.getDefault(), Locale.getDefault(), false);
set(year, month, day, hour, minute, second);
}
...
}

C

main(String[] args) {

Calendar calendar = new GregorianCalendar();

int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH); // Jan = 0, not 1
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
int weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);
int weekOfMonth = calendar.get(Calendar.WEEK_OF_MONTH);

System.out.println("year: " + year + ", month: " + month
+ ", dayOfMonth: " + dayOfMonth + ", dayOfWeek: " + dayOfWeek
+ ", weekOfMonth: " + weekOfMonth);

int hour = calendar.get(Calendar.HOUR); // 12 hour clock
int hourOfDay = calendar.get(Calendar.HOUR_OF_DAY); // 24 hour clock
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);
int millisecond = calendar.get(Calendar.MILLISECOND);

System.out.println("hour: " + hour + ", hourOfDay: " + hourOfDay
+ ", minute: " + minute + ", second: " + second
+ ", millisecond: " + millisecond);
}
}

weekOfMonth: 2
hour: 9, hourOfDay: 21, minute: 21, second: 19, millisecond: 609

main(String[] args) {

SimpleDateFormat simpleFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

Calendar calendar = new GregorianCalendar();

calendar.set(Calendar.YEAR, 1984);
calendar.set(Calendar.MONTH, 5);
calendar.set(Calendar.DAY_OF_MONTH, 17);

calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 45);
calendar.set(Calendar.SECOND, 58);
calendar.set(Calendar.MILLISECOND, 731);

System.out.println(simpleFormat.format(calendar.getTime()));
}
}

1984-06-17 23:45:58.731

main(String[] args) {

Calendar calendar = new GregorianCalendar();

calendar.set(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_MONTH, 31);
calendar.set(Calendar.YEAR, 2011);

SimpleDateFormat formatter = new SimpleDateFormat("MMM dd, yyyy");
System.out.println("Before adding: " + formatter.format(calendar.getTime()));

calendar.add(Calendar.MONTH, 13);

System.out.println("After adding: " + formatter.format(calendar.getTime()));
}
}

Before adding: Jan 31, 2011
After adding: Feb 29, 2012

2011

2012

main(String[] args) {

Calendar calendar = new GregorianCalendar();

calendar.set(Calendar.MONTH, 0);
calendar.set(Calendar.DAY_OF_MONTH, 31);
calendar.set(Calendar.YEAR, 2011);

SimpleDateFormat formatter = new SimpleDateFormat("MMM dd, yyyy");
System.out.println("Before rolling: " + formatter.format(calendar.getTime()));

calendar.roll(Calendar.MONTH, 13);

System.out.println("After rolling: " + formatter.format(calendar.getTime()));
}
}

Before rolling: Jan 31, 2011
After rolling: Feb 28, 2011

2011

2011

Comparable {

public final void set(int year, int month, int date) {
set(YEAR, year);
set(MONTH, month);
set(DATE, date);
}

public final void set(int year, int month, int date, int hourOfDay, int minute) {
set(YEAR, year);
set(MONTH, month);
set(DATE, date);
set(HOUR_OF_DAY, hourOfDay);
set(MINUTE, minute);
}

public final void set(int year, int month, int date, int hourOfDay, int minute, int second) {
set(YEAR, year);
set(MONTH, month);
set(DATE, date);
set(HOUR_OF_DAY, hourOfDay);
set(MINUTE, minute);
set(SECOND, second);
}
}

main(String[] args) {

Calendar calendar = new GregorianCalendar();

System.out.println("Current time is: " + calendar.getTime());

calendar.set(2020, 5, 17, 07, 12, 45);

System.out.println("Altered time is: " + calendar.getTime());
}
}

Current time is: Fri Jan 11 22:59:35 GMT+07:00 2013
Altered time is: Wed Jun 17 07:12:45 GMT+07:00 2020

void main(String[] args) {

Calendar calendar1 = new GregorianCalendar();
int year = 2012;
int month = Calendar.MARCH;
int day = 23;
calendar1.set(year, month, day);

int iterationCount = 1000;
boolean isEqual = false;
for (int i = 0; i < iterationCount; i++) {
final Calendar calendar2 = new GregorianCalendar();
calendar2.set(year, month, day);

System.out.println(calendar1.equals(calendar2));
}
}
}

private boolean lenient = true;

public void setLenient(boolean lenient) {
this.lenient = lenient;
}

public boolean isLenient() {
return lenient;
}
...
}

C

A

main(String[] args) {

Calendar calendar = new GregorianCalendar();
System.out.println("Is calendar lenient? " + calendar.isLenient());

calendar.set(2010, 0, 1);
System.out.println(calendar.getTime());

calendar.set(2010, Calendar.FEBRUARY, 29);
System.out.println(calendar.getTime());
}
}

Is calendar lenient? true
Fri Jan 01 15:19:49 GMT+07:00 2010
Mon Mar 01 15:19:49 GMT+07:00 2010

Jan 01

Mar 01

main(String[] args) {

Calendar calendar = new GregorianCalendar();

calendar.setLenient(false);
System.out.println("Is calendar lenient? " + calendar.isLenient());

calendar.set(2010, 0, 1);
System.out.println(calendar.getTime());

calendar.set(2010, Calendar.FEBRUARY, 29);
System.out.println(calendar.getTime());
}
}

Is calendar lenient? false
Fri Jan 01 15:21:59 GMT+07:00 2010
Exception in thread "main" java.lang.IllegalArgumentException: MONTH: 1 -> 2
at java.util.GregorianCalendar.computeTime(Unknown Source)
at java.util.Calendar.updateTime(Unknown Source)
at java.util.Calendar.getTimeInMillis(Unknown Source)
at java.util.Calendar.getTime(Unknown Source)
at dates.CalendarNonLenientDemo.main(CalendarNonLenientDemo.java:19)

public TimeZone getTimeZone()
public void setTimeZone(TimeZone zone)
...
}

C

A

args) {

TimeZone timeZoneMOW = TimeZone.getTimeZone("Europe/Moscow");
TimeZone timeZoneLA = TimeZone.getTimeZone("America/Los_Angeles");

Calendar calendar = new GregorianCalendar();

calendar.setTimeZone(timeZoneMOW);

long timeMOW = calendar.getTimeInMillis();
System.out.println("time Moscow = " + timeMOW);
System.out.println("hour = " + calendar.get(Calendar.HOUR_OF_DAY));

calendar.setTimeZone(timeZoneLA);

long timeLA = calendar.getTimeInMillis();
System.out.println("time Los Angeles = " + timeLA);
System.out.println("hour = " + calendar.get(Calendar.HOUR_OF_DAY));
}
}

time Moscow = 1370852587812
hour = 12
time Los Angeles = 1370852587812
hour = 1

1

12

protected Calendar calendar;

public final String format(Date date)
public Date parse(String source) throws ParseException

public boolean isLenient()
public void setLenient(boolean lenient)

public TimeZone getTimeZone()
public void setTimeZone(TimeZone zone)

public Calendar getCalendar()
public void setCalendar(Calendar newCalendar)

...
}

C

A

main(String args[]) {

Format formatter;
Calendar calendar = new GregorianCalendar();

calendar.set(Calendar.YEAR,1984);
calendar.set(Calendar.MONTH,5);
calendar.set(Calendar.DAY_OF_MONTH,17);
calendar.set(Calendar.HOUR_OF_DAY,23);
calendar.set(Calendar.MINUTE,45);
calendar.set(Calendar.SECOND,58);
calendar.set(Calendar.MILLISECOND,731);

Date date = calendar.getTime();

formatter = new SimpleDateFormat("MM/dd/yy");
System.out.println(formatter.format(date));

formatter = new SimpleDateFormat("dd/MM/yy");
System.out.println(formatter.format(date));

formatter = new SimpleDateFormat("dd-MMM-yy");
System.out.println(formatter.format(date));

formatter = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss");
System.out.println(formatter.format(date));

formatter = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss Z");
System.out.println(formatter.format(date));

formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy HH:mm:ss zzzz");
System.out.println(formatter.format(date));
}
}

1984 23:45:58 GMT+07:00

public static void main(String args[]) {

SimpleDateFormat formatter;
Calendar calendar = new GregorianCalendar();

calendar.set(Calendar.YEAR,1984);
calendar.set(Calendar.MONTH,5);
calendar.set(Calendar.DAY_OF_MONTH,17);
calendar.set(Calendar.HOUR_OF_DAY,23);
calendar.set(Calendar.MINUTE,45);
calendar.set(Calendar.SECOND,58);
calendar.set(Calendar.MILLISECOND,731);

Date date = calendar.getTime();

formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy HH:mm:ss zzzz");
System.out.println(formatter.format(date));

formatter.setTimeZone(TimeZone.getTimeZone("GMT+0200"));
System.out.println(formatter.format(date));

formatter.setTimeZone(TimeZone.getTimeZone("Europe/Moscow"));
System.out.println(formatter.format(date));

formatter.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
System.out.println(formatter.format(date));
}
}

Sunday, 17 June 1984 23:45:58 Novosibirsk Summer Time
Sunday, 17 June 1984 17:45:58 GMT+02:00
Sunday, 17 June 1984 19:45:58 Moscow Daylight Time
Sunday, 17 June 1984 08:45:58 Pacific Daylight Time

main(String args[]) {

DateFormat formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy HH:mm:ss zzzzz");

try {
//On that date Asia/Novosibirsk was GMT+08:00
Date date = formatter.parse("Sunday, 17 June 1984 23:45:58 GMT+03:00");
Calendar calendar = new GregorianCalendar(TimeZone.getTimeZone("Asia/Novosibirsk"));

calendar.setTime(date);

int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
int hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);

System.out.println("year: " + year + ", month: " + month
+ ", dayOfMonth: " + dayOfMonth + ", hourOfDay: "
+ hourOfDay + ", minute: " + minute + ", second: "
+ second);


} catch (ParseException e) {
e.printStackTrace();
}
}
}

year: 1984, month: 5, dayOfMonth: 18, hourOfDay: 4, minute: 45, second: 58

public static void main(String args[]) {

DateFormat formatter;

formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy HH:mm:ss");
formatter.setTimeZone(TimeZone.getTimeZone("Europe/Moscow"));

try {
Date date = formatter.parse("Sunday, 17 June 1984 23:45:58");

Calendar calendar = new GregorianCalendar(
TimeZone.getTimeZone("Asia/Novosibirsk"));
calendar.setTime(date);

int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
int hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);

System.out.println("year: " + year + ", month: " + month
+ ", dayOfMonth: " + dayOfMonth + ", hourOfDay: "
+ hourOfDay + ", minute: " + minute + ", second: "
+ second);

} catch (ParseException e) {
e.printStackTrace();
}
}
}

year: 1984, month: 5, dayOfMonth: 18, hourOfDay: 4, minute: 45, second: 58

{

SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
System.out.println("Is formatter lenient? " + formatter.isLenient());

String[] strings = { "40/20/2015", "10//10/2015", "50/60/2015", "10.10.2015", "10/10/2015" };

for (String string : strings) {
try {
Date date = formatter.parse(string);
System.out.println(formatter.format(date));

} catch (ParseException e) {
System.out.println("Incorrect date format. " + e.getMessage());
}
}
}
}

Is formatter lenient? true
09/09/2016
Incorrect date format. Unparseable date: "10//10/2015"
19/01/2020
Incorrect date format. Unparseable date: "10.10.2015"
10/10/2015

{

SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
formatter.setLenient(false);
System.out.println("Is formatter lenient? " + formatter.isLenient());

String[] strings = { "40/20/2015", "10//10/2015", "50/60/2015", "10.10.2015", "10/10/2015" };

for (String string : strings) {
try {
Date date = formatter.parse(string);
System.out.println(formatter.format(date));

} catch (ParseException e) {
System.out.println("Incorrect date format. " + e.getMessage());
}
}
}
}

Is formatter lenient? false
Incorrect date format. Unparseable date: "40/20/2015"
Incorrect date format. Unparseable date: "10//10/2015"
Incorrect date format. Unparseable date: "50/60/2015"
Incorrect date format. Unparseable date: "10.10.2015"
10/10/2015