236 lines
8.2 KiB
Java
236 lines
8.2 KiB
Java
/*
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* Copyright 2013 Martin Smock <smock.martin@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.utils.iso8601;
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import static java.time.ZoneId.systemDefault;
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import static java.time.temporal.ChronoField.*;
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import java.time.*;
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import java.time.format.DateTimeFormatter;
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import java.time.format.DateTimeFormatterBuilder;
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import java.time.format.SignStyle;
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import java.time.temporal.ChronoField;
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import java.util.Date;
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import li.strolch.utils.helper.StringHelper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @author Martin Smock <smock.martin@gmail.com>
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*/
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@SuppressWarnings("nls")
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public class ISO8601 implements DateFormat {
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private static final Logger logger = LoggerFactory.getLogger(ISO8601.class);
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public static final Date EMPTY_VALUE = parseToDate("-");
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public static final ZonedDateTime YEAR_3000 = LocalDate.of(3000, 1, 1).atStartOfDay(systemDefault());
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public static final ZonedDateTime EMPTY_VALUE_ZONED_DATE = ZonedDateTime.ofInstant(EMPTY_VALUE.toInstant(),
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systemDefault());
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public static final LocalDateTime EMPTY_VALUE_LOCAL_DATE = LocalDateTime.ofInstant(EMPTY_VALUE.toInstant(),
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systemDefault());
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private static final DateTimeFormatter _LOCAL_DATE_TIME_SECONDS;
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static {
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_LOCAL_DATE_TIME_SECONDS = new DateTimeFormatterBuilder() //
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.parseCaseInsensitive() //
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.appendValue(YEAR, 4, 10, SignStyle.EXCEEDS_PAD) //
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.appendLiteral('-') //
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.appendValue(MONTH_OF_YEAR, 2) //
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.appendLiteral('-') //
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.appendValue(DAY_OF_MONTH, 2) //
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.appendLiteral('T') //
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.appendValue(HOUR_OF_DAY, 2) //
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.appendLiteral(':') //
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.appendValue(MINUTE_OF_HOUR, 2) //
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.optionalStart() //
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.appendLiteral(':') //
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.appendValue(SECOND_OF_MINUTE, 2) //
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.toFormatter();
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}
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public static final DateTimeFormatter OFFSET_DATE_TIME_SECONDS;
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static {
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OFFSET_DATE_TIME_SECONDS = new DateTimeFormatterBuilder() //
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.append(_LOCAL_DATE_TIME_SECONDS) //
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.parseLenient() //
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.appendOffsetId() //
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.parseStrict() //
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.toFormatter() //
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.withZone(ZoneId.systemDefault());
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}
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public static final DateTimeFormatter OFFSET_DATE_TIME_MILLIS;
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static {
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OFFSET_DATE_TIME_MILLIS = new DateTimeFormatterBuilder() //
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.append(_LOCAL_DATE_TIME_SECONDS) //
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.optionalStart() //
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.parseLenient() //
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.appendFraction(NANO_OF_SECOND, 0, 3, true) //
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.appendOffsetId() //
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.parseStrict() //
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.toFormatter() //
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.withZone(ZoneId.systemDefault());
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}
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public static final DateTimeFormatter OFFSET_DATE_TIME_MICROS;
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static {
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OFFSET_DATE_TIME_MICROS = new DateTimeFormatterBuilder() //
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.append(_LOCAL_DATE_TIME_SECONDS) //
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.optionalStart() //
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.parseLenient() //
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.appendFraction(NANO_OF_SECOND, 0, 6, true) //
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.appendOffsetId() //
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.parseStrict() //
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.toFormatter() //
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.withZone(ZoneId.systemDefault());
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}
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public static final DateTimeFormatter OFFSET_DATE_TIME_NANOS;
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static {
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OFFSET_DATE_TIME_NANOS = new DateTimeFormatterBuilder() //
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.append(_LOCAL_DATE_TIME_SECONDS) //
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.optionalStart() //
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.parseLenient() //
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.appendFraction(NANO_OF_SECOND, 0, 9, true) //
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.appendOffsetId() //
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.parseStrict() //
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.toFormatter() //
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.withZone(ZoneId.systemDefault());
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}
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@Override
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public String format(long timePoint) {
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if (timePoint == Long.MAX_VALUE || timePoint == Long.MIN_VALUE || timePoint == 0L)
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return "-";
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try {
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Date date = new Date();
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date.setTime(timePoint);
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return format(date);
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} catch (Exception e) {
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logger.error(e.getMessage(), e);
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return null;
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}
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}
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@Override
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public String format(Date date) {
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return toString(date);
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}
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@Override
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public long parseLong(String s) {
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return parse(s).getTime();
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}
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@Override
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public Date parse(String s) {
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return parseToDate(s);
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}
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public static Date parseToDate(String s) {
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return Date.from(parseToZdt(s).toInstant());
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}
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public static ZonedDateTime parseToZdt(String s) {
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return _parse(s, NANO_OF_SECOND);
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}
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public static ZonedDateTime parseToZdt(String s, ChronoField precision) {
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return _parse(s, precision);
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}
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private static ZonedDateTime _parse(String s, ChronoField precision) {
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if (StringHelper.isEmpty(s)) {
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String msg = "An empty value can not pe parsed to a date!";
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throw new IllegalArgumentException(msg);
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}
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if (s.equals("-"))
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return ZonedDateTime.of(1970, 1, 1, 0, 0, 0, 0, ZoneOffset.UTC);
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return ZonedDateTime.parse(s, getIso8601Formatter(precision));
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}
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public static String toString(long timeMs) {
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return toString(Instant.ofEpochMilli(timeMs).atZone(systemDefault()));
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}
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public static String toString(LocalDateTime localDateTime) {
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return toString(localDateTime.atZone(systemDefault()));
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}
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public static String toString(ZonedDateTime zonedDateTime) {
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return toString(zonedDateTime, MILLI_OF_SECOND);
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}
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public static String toString(ZonedDateTime zonedDateTime, ChronoField precision) {
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return getIso8601Formatter(precision).format(zonedDateTime);
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}
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public static String toString(Date date) {
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return getIso8601Formatter(MILLI_OF_SECOND).format(date.toInstant());
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}
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public static DateTimeFormatter getIso8601Formatter(ChronoField precision) {
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return switch (precision) {
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case SECOND_OF_MINUTE -> OFFSET_DATE_TIME_SECONDS;
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case MILLI_OF_SECOND -> OFFSET_DATE_TIME_MILLIS;
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case MICRO_OF_SECOND -> OFFSET_DATE_TIME_MICROS;
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case NANO_OF_SECOND -> OFFSET_DATE_TIME_NANOS;
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default -> throw new IllegalArgumentException("Unsupported precision " + precision);
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};
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}
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public static void main(String[] args) {
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System.out.println(toString(parseToZdt("-")));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44+02:00")));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44+02:00", SECOND_OF_MINUTE)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44+02:00", MILLI_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44+02:00", MICRO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44+02:00", NANO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.234+02:00")));
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// illegal: System.out.println(toString(parseToZdt("2020-06-08T18:44:44.234+02:00", SECOND_OF_MINUTE)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.234+02:00", MILLI_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.234+02:00", MICRO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.234+02:00", NANO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.888234+02:00")));
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// illegal: System.out.println(toString(parseToZdt("2020-06-08T18:44:44.888234+02:00", SECOND_OF_MINUTE)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.888234+02:00", MILLI_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.888234+02:00", MICRO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.888234+02:00", NANO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.280888234+02:00")));
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// illegal: System.out.println(toString(parseToZdt("2020-06-08T18:44:44.280888234+02:00", SECOND_OF_MINUTE)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.280888234+02:00", MILLI_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.280888234+02:00", MICRO_OF_SECOND)));
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System.out.println(toString(parseToZdt("2020-06-08T18:44:44.280888234+02:00", NANO_OF_SECOND)));
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System.out.println(toString(ZonedDateTime.now()));
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System.out.println(toString(ZonedDateTime.now(), SECOND_OF_MINUTE));
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System.out.println(toString(ZonedDateTime.now(), MILLI_OF_SECOND));
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System.out.println(toString(ZonedDateTime.now(), MICRO_OF_SECOND));
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System.out.println(toString(ZonedDateTime.now(), NANO_OF_SECOND));
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System.out.println(toString(LocalDateTime.now()));
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}
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}
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