JavaExercises/Experiments/DateAndTime.java at master · biblelamp/JavaExercises · GitHub

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import java.sql.Date;

import java.sql.Timestamp;

import java.text.SimpleDateFormat;

import java.text.ParseException;

import java.time.Clock;

import java.time.Instant;

import java.time.OffsetDateTime;

import java.time.ZoneOffset;

import java.time.LocalDate;

import java.util.Calendar;

import java.util.TimeZone;

import javax.xml.datatype.XMLGregorianCalendar;

import javax.xml.datatype.DatatypeFactory;

import javax.xml.datatype.DatatypeConfigurationException;

class DateAndTime {

public static void main(String[] args) throws DatatypeConfigurationException, ParseException {

String strDate = "3333-03-03 00:00:00";

Date d1 = Date.valueOf(strDate.substring(0, 10));

//System.out.println(d1 + 1);

System.out.println(String.format("%tY", d1));

System.out.println(String.format("%tY/%tm/%td", d1, d1, d1));

//Date currentDate = new Date();

//String isoDate = currentDate.toISOString();

//System.out.println(currentDate, isoDate);

Instant yourInstant = Instant.now();

String dateTimeString = yourInstant.toString();

XMLGregorianCalendar date2 = DatatypeFactory.newInstance().newXMLGregorianCalendar(dateTimeString);

System.out.println(date2);

//long offsetDateTime = OffsetDateTime.now().toEpochSecond();

long offsetDateTime = OffsetDateTime.of(2019, 9, 10, 10, 53, 0, 0, ZoneOffset.UTC).toEpochSecond();

OffsetDateTime startDateTime = OffsetDateTime

.now(Clock.fixed(Instant.ofEpochSecond(offsetDateTime), ZoneOffset.UTC));

System.out.println(offsetDateTime);

System.out.println(startDateTime);

// LocalDate -> sql.Date using timeZone

Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));

calendar.set(2019, 9 - 1, 23); // months count from 0

Date sqlDate = new Date(calendar.getTimeInMillis());

System.out.println(sqlDate);

// String -> OffsetDateTime

String dateOd = "1968+01:00";

OffsetDateTime date = OffsetDateTime.now();

System.out.println(date);

date = OffsetDateTime.of(Integer.valueOf(dateOd.substring(0, 4)), 1, 1, 0, 0, 0, 0, ZoneOffset.UTC);

System.out.println(date);

String creationDate = "2019-11-17T19:11:37" + "Z";

Instant instant = Instant.parse(creationDate);

System.out.println(instant);

String dateTime = "1966-12-01T00:00:00";

Timestamp ts = Timestamp.from(Instant.parse(dateTime + "Z"));

System.out.println(ts);

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date dt = new Date(sdf.parse(dateTime).getTime());

System.out.println(dt);

Date dateNow = new Date(Instant.now().toEpochMilli());

System.out.println(dateNow);

}

JavaExercises/Experiments/DateAndTime.java at master · biblelamp/JavaExercises · GitHub

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