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Java example source code file (LocalTime.java)
This example Java source code file (LocalTime.java) is included in the alvinalexander.com
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Warehouse" project. The intent of this project is to help you "Learn
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Learn more about this Java project at its project page.
The LocalTime.java Java example source code
/*
* Copyright 2001-2011 Stephen Colebourne
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.joda.time;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Calendar;
import java.util.Date;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import org.joda.convert.FromString;
import org.joda.convert.ToString;
import org.joda.time.base.BaseLocal;
import org.joda.time.chrono.ISOChronology;
import org.joda.time.convert.ConverterManager;
import org.joda.time.convert.PartialConverter;
import org.joda.time.field.AbstractReadableInstantFieldProperty;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
/**
* LocalTime is an immutable time class representing a time
* without a time zone.
* <p>
* LocalTime implements the {@link ReadablePartial} interface.
* To do this, the interface methods focus on the key fields -
* HourOfDay, MinuteOfHour, SecondOfMinute and MillisOfSecond.
* However, <b>all time fields may in fact be queried.
* <p>
* Calculations on LocalTime are performed using a {@link Chronology}.
* This chronology will be set internally to be in the UTC time zone
* for all calculations.
*
* <p>Each individual field can be queried in two ways:
* <ul>
* <li>getHourOfDay()
* <li>hourOfDay().get()
* </ul>
* The second technique also provides access to other useful methods on the
* field:
* <ul>
* <li>numeric value
* <li>text value
* <li>short text value
* <li>maximum/minimum values
* <li>add/subtract
* <li>set
* <li>rounding
* </ul>
*
* <p>
* LocalTime is thread-safe and immutable, provided that the Chronology is as well.
* All standard Chronology classes supplied are thread-safe and immutable.
*
* @author Stephen Colebourne
* @since 1.3
*/
public final class LocalTime
extends BaseLocal
implements ReadablePartial, Serializable {
/** Serialization lock */
private static final long serialVersionUID = -12873158713873L;
/** Constant for midnight. */
public static final LocalTime MIDNIGHT = new LocalTime(0, 0, 0, 0);
/** The index of the hourOfDay field in the field array */
private static final int HOUR_OF_DAY = 0;
/** The index of the minuteOfHour field in the field array */
private static final int MINUTE_OF_HOUR = 1;
/** The index of the secondOfMinute field in the field array */
private static final int SECOND_OF_MINUTE = 2;
/** The index of the millisOfSecond field in the field array */
private static final int MILLIS_OF_SECOND = 3;
/** Set of known duration types. */
private static final Set<DurationFieldType> TIME_DURATION_TYPES = new HashSet();
static {
TIME_DURATION_TYPES.add(DurationFieldType.millis());
TIME_DURATION_TYPES.add(DurationFieldType.seconds());
TIME_DURATION_TYPES.add(DurationFieldType.minutes());
TIME_DURATION_TYPES.add(DurationFieldType.hours());
}
/** The local millis from 1970-01-01T00:00:00 */
private final long iLocalMillis;
/** The chronology to use, in UTC */
private final Chronology iChronology;
//-----------------------------------------------------------------------
/**
* Obtains a {@code LocalTime} set to the current system millisecond time
* using <code>ISOChronology in the default time zone.
* The resulting object does not use the zone.
*
* @return the current time, not null
* @since 2.0
*/
public static LocalTime now() {
return new LocalTime();
}
/**
* Obtains a {@code LocalTime} set to the current system millisecond time
* using <code>ISOChronology in the specified time zone.
* The resulting object does not use the zone.
*
* @param zone the time zone, not null
* @return the current time, not null
* @since 2.0
*/
public static LocalTime now(DateTimeZone zone) {
if (zone == null) {
throw new NullPointerException("Zone must not be null");
}
return new LocalTime(zone);
}
/**
* Obtains a {@code LocalTime} set to the current system millisecond time
* using the specified chronology.
* The resulting object does not use the zone.
*
* @param chronology the chronology, not null
* @return the current time, not null
* @since 2.0
*/
public static LocalTime now(Chronology chronology) {
if (chronology == null) {
throw new NullPointerException("Chronology must not be null");
}
return new LocalTime(chronology);
}
//-----------------------------------------------------------------------
/**
* Parses a {@code LocalTime} from the specified string.
* <p>
* This uses {@link ISODateTimeFormat#localTimeParser()}.
*
* @param str the string to parse, not null
* @since 2.0
*/
@FromString
public static LocalTime parse(String str) {
return parse(str, ISODateTimeFormat.localTimeParser());
}
/**
* Parses a {@code LocalTime} from the specified string using a formatter.
*
* @param str the string to parse, not null
* @param formatter the formatter to use, not null
* @since 2.0
*/
public static LocalTime parse(String str, DateTimeFormatter formatter) {
return formatter.parseLocalTime(str);
}
//-----------------------------------------------------------------------
/**
* Constructs a LocalTime from the specified millis of day using the
* ISO chronology.
* <p>
* The millisOfDay value may exceed the number of millis in one day,
* but additional days will be ignored.
* This method uses the UTC time zone internally.
*
* @param millisOfDay the number of milliseconds into a day to convert
*/
public static LocalTime fromMillisOfDay(long millisOfDay) {
return fromMillisOfDay(millisOfDay, null);
}
/**
* Constructs a LocalTime from the specified millis of day using the
* specified chronology.
* <p>
* The millisOfDay value may exceed the number of millis in one day,
* but additional days will be ignored.
* This method uses the UTC time zone internally.
*
* @param millisOfDay the number of milliseconds into a day to convert
* @param chrono the chronology, null means ISO chronology
*/
public static LocalTime fromMillisOfDay(long millisOfDay, Chronology chrono) {
chrono = DateTimeUtils.getChronology(chrono).withUTC();
return new LocalTime(millisOfDay, chrono);
}
//-----------------------------------------------------------------------
/**
* Constructs a LocalTime from a <code>java.util.Calendar
* using exactly the same field values.
* <p>
* Each field is queried from the Calendar and assigned to the LocalTime.
* This is useful if you have been using the Calendar as a local time,
* ignoring the zone.
* <p>
* One advantage of this method is that this method is unaffected if the
* version of the time zone data differs between the JDK and Joda-Time.
* That is because the local field values are transferred, calculated using
* the JDK time zone data and without using the Joda-Time time zone data.
* <p>
* This factory method ignores the type of the calendar and always
* creates a LocalTime with ISO chronology. It is expected that you
* will only pass in instances of <code>GregorianCalendar however
* this is not validated.
*
* @param calendar the Calendar to extract fields from
* @return the created LocalTime
* @throws IllegalArgumentException if the calendar is null
* @throws IllegalArgumentException if the date is invalid for the ISO chronology
*/
public static LocalTime fromCalendarFields(Calendar calendar) {
if (calendar == null) {
throw new IllegalArgumentException("The calendar must not be null");
}
return new LocalTime(
calendar.get(Calendar.HOUR_OF_DAY),
calendar.get(Calendar.MINUTE),
calendar.get(Calendar.SECOND),
calendar.get(Calendar.MILLISECOND)
);
}
/**
* Constructs a LocalTime from a <code>java.util.Date
* using exactly the same field values.
* <p>
* Each field is queried from the Date and assigned to the LocalTime.
* This is useful if you have been using the Date as a local time,
* ignoring the zone.
* <p>
* One advantage of this method is that this method is unaffected if the
* version of the time zone data differs between the JDK and Joda-Time.
* That is because the local field values are transferred, calculated using
* the JDK time zone data and without using the Joda-Time time zone data.
* <p>
* This factory method always creates a LocalTime with ISO chronology.
*
* @param date the Date to extract fields from
* @return the created LocalTime
* @throws IllegalArgumentException if the calendar is null
* @throws IllegalArgumentException if the date is invalid for the ISO chronology
*/
@SuppressWarnings("deprecation")
public static LocalTime fromDateFields(Date date) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
return new LocalTime(
date.getHours(),
date.getMinutes(),
date.getSeconds(),
(((int) (date.getTime() % 1000)) + 1000) % 1000
);
}
//-----------------------------------------------------------------------
/**
* Constructs an instance set to the current local time evaluated using
* ISO chronology in the default zone.
* <p>
* Once the constructor is completed, the zone is no longer used.
*
* @see #now()
*/
public LocalTime() {
this(DateTimeUtils.currentTimeMillis(), ISOChronology.getInstance());
}
/**
* Constructs an instance set to the current local time evaluated using
* ISO chronology in the specified zone.
* <p>
* If the specified time zone is null, the default zone is used.
* Once the constructor is completed, the zone is no longer used.
*
* @param zone the time zone, null means default zone
* @see #now(DateTimeZone)
*/
public LocalTime(DateTimeZone zone) {
this(DateTimeUtils.currentTimeMillis(), ISOChronology.getInstance(zone));
}
/**
* Constructs an instance set to the current local time evaluated using
* specified chronology and zone.
* <p>
* If the chronology is null, ISO chronology in the default time zone is used.
* Once the constructor is completed, the zone is no longer used.
*
* @param chronology the chronology, null means ISOChronology in default zone
* @see #now(Chronology)
*/
public LocalTime(Chronology chronology) {
this(DateTimeUtils.currentTimeMillis(), chronology);
}
//-----------------------------------------------------------------------
/**
* Constructs an instance set to the local time defined by the specified
* instant evaluated using ISO chronology in the default zone.
* <p>
* Once the constructor is completed, the zone is no longer used.
*
* @param instant the milliseconds from 1970-01-01T00:00:00Z
*/
public LocalTime(long instant) {
this(instant, ISOChronology.getInstance());
}
/**
* Constructs an instance set to the local time defined by the specified
* instant evaluated using ISO chronology in the specified zone.
* <p>
* If the specified time zone is null, the default zone is used.
* Once the constructor is completed, the zone is no longer used.
*
* @param instant the milliseconds from 1970-01-01T00:00:00Z
* @param zone the time zone, null means default zone
*/
public LocalTime(long instant, DateTimeZone zone) {
this(instant, ISOChronology.getInstance(zone));
}
/**
* Constructs an instance set to the local time defined by the specified
* instant evaluated using the specified chronology.
* <p>
* If the chronology is null, ISO chronology in the default zone is used.
* Once the constructor is completed, the zone is no longer used.
*
* @param instant the milliseconds from 1970-01-01T00:00:00Z
* @param chronology the chronology, null means ISOChronology in default zone
*/
public LocalTime(long instant, Chronology chronology) {
chronology = DateTimeUtils.getChronology(chronology);
long localMillis = chronology.getZone().getMillisKeepLocal(DateTimeZone.UTC, instant);
chronology = chronology.withUTC();
iLocalMillis = chronology.millisOfDay().get(localMillis);
iChronology = chronology;
}
//-----------------------------------------------------------------------
/**
* Constructs an instance from an Object that represents a datetime.
* <p>
* If the object contains no chronology, <code>ISOChronology is used.
* If the object contains no time zone, the default zone is used.
* Once the constructor is completed, the zone is no longer used.
* <p>
* The recognised object types are defined in
* {@link org.joda.time.convert.ConverterManager ConverterManager} and
* include ReadablePartial, ReadableInstant, String, Calendar and Date.
* The String formats are described by {@link ISODateTimeFormat#localTimeParser()}.
* The default String converter ignores the zone and only parses the field values.
*
* @param instant the datetime object
* @throws IllegalArgumentException if the instant is invalid
*/
public LocalTime(Object instant) {
this(instant, (Chronology) null);
}
/**
* Constructs an instance from an Object that represents a datetime,
* forcing the time zone to that specified.
* <p>
* If the object contains no chronology, <code>ISOChronology is used.
* If the specified time zone is null, the default zone is used.
* Once the constructor is completed, the zone is no longer used.
* <p>
* The recognised object types are defined in
* {@link org.joda.time.convert.ConverterManager ConverterManager} and
* include ReadablePartial, ReadableInstant, String, Calendar and Date.
* The String formats are described by {@link ISODateTimeFormat#localTimeParser()}.
* The default String converter ignores the zone and only parses the field values.
*
* @param instant the datetime object
* @param zone the time zone
* @throws IllegalArgumentException if the instant is invalid
*/
public LocalTime(Object instant, DateTimeZone zone) {
PartialConverter converter = ConverterManager.getInstance().getPartialConverter(instant);
Chronology chronology = converter.getChronology(instant, zone);
chronology = DateTimeUtils.getChronology(chronology);
iChronology = chronology.withUTC();
int[] values = converter.getPartialValues(this, instant, chronology, ISODateTimeFormat.localTimeParser());
iLocalMillis = iChronology.getDateTimeMillis(0L, values[0], values[1], values[2], values[3]);
}
/**
* Constructs an instance from an Object that represents a datetime,
* using the specified chronology.
* <p>
* If the chronology is null, ISO in the default time zone is used.
* Once the constructor is completed, the zone is no longer used.
* <p>
* The recognised object types are defined in
* {@link org.joda.time.convert.ConverterManager ConverterManager} and
* include ReadablePartial, ReadableInstant, String, Calendar and Date.
* The String formats are described by {@link ISODateTimeFormat#localTimeParser()}.
* The default String converter ignores the zone and only parses the field values.
*
* @param instant the datetime object
* @param chronology the chronology
* @throws IllegalArgumentException if the instant is invalid
*/
public LocalTime(Object instant, Chronology chronology) {
PartialConverter converter = ConverterManager.getInstance().getPartialConverter(instant);
chronology = converter.getChronology(instant, chronology);
chronology = DateTimeUtils.getChronology(chronology);
iChronology = chronology.withUTC();
int[] values = converter.getPartialValues(this, instant, chronology, ISODateTimeFormat.localTimeParser());
iLocalMillis = iChronology.getDateTimeMillis(0L, values[0], values[1], values[2], values[3]);
}
//-----------------------------------------------------------------------
/**
* Constructs an instance set to the specified time
* using <code>ISOChronology.
*
* @param hourOfDay the hour of the day, from 0 to 23
* @param minuteOfHour the minute of the hour, from 0 to 59
*/
public LocalTime(
int hourOfDay,
int minuteOfHour) {
this(hourOfDay, minuteOfHour, 0, 0, ISOChronology.getInstanceUTC());
}
/**
* Constructs an instance set to the specified time
* using <code>ISOChronology.
*
* @param hourOfDay the hour of the day, from 0 to 23
* @param minuteOfHour the minute of the hour, from 0 to 59
* @param secondOfMinute the second of the minute, from 0 to 59
*/
public LocalTime(
int hourOfDay,
int minuteOfHour,
int secondOfMinute) {
this(hourOfDay, minuteOfHour, secondOfMinute, 0, ISOChronology.getInstanceUTC());
}
/**
* Constructs an instance set to the specified time
* using <code>ISOChronology.
*
* @param hourOfDay the hour of the day, from 0 to 23
* @param minuteOfHour the minute of the hour, from 0 to 59
* @param secondOfMinute the second of the minute, from 0 to 59
* @param millisOfSecond the millisecond of the second, from 0 to 999
*/
public LocalTime(
int hourOfDay,
int minuteOfHour,
int secondOfMinute,
int millisOfSecond) {
this(hourOfDay, minuteOfHour, secondOfMinute,
millisOfSecond, ISOChronology.getInstanceUTC());
}
/**
* Constructs an instance set to the specified time
* using the specified chronology, whose zone is ignored.
* <p>
* If the chronology is null, <code>ISOChronology is used.
*
* @param hourOfDay the hour of the day, valid values defined by the chronology
* @param minuteOfHour the minute of the hour, valid values defined by the chronology
* @param secondOfMinute the second of the minute, valid values defined by the chronology
* @param millisOfSecond the millisecond of the second, valid values defined by the chronology
* @param chronology the chronology, null means ISOChronology in default zone
*/
public LocalTime(
int hourOfDay,
int minuteOfHour,
int secondOfMinute,
int millisOfSecond,
Chronology chronology) {
super();
chronology = DateTimeUtils.getChronology(chronology).withUTC();
long instant = chronology.getDateTimeMillis(
0L, hourOfDay, minuteOfHour, secondOfMinute, millisOfSecond);
iChronology = chronology;
iLocalMillis = instant;
}
/**
* Handle broken serialization from other tools.
* @return the resolved object, not null
*/
private Object readResolve() {
if (iChronology == null) {
return new LocalTime(iLocalMillis, ISOChronology.getInstanceUTC());
}
if (DateTimeZone.UTC.equals(iChronology.getZone()) == false) {
return new LocalTime(iLocalMillis, iChronology.withUTC());
}
return this;
}
//-----------------------------------------------------------------------
/**
* Gets the number of fields in this partial, which is four.
* The supported fields are HourOfDay, MinuteOfHour, SecondOfMinute
* and MillisOfSecond.
*
* @return the field count, four
*/
public int size() {
return 4;
}
/**
* Gets the field for a specific index in the chronology specified.
* <p>
* This method must not use any instance variables.
*
* @param index the index to retrieve
* @param chrono the chronology to use
* @return the field
*/
protected DateTimeField getField(int index, Chronology chrono) {
switch (index) {
case HOUR_OF_DAY:
return chrono.hourOfDay();
case MINUTE_OF_HOUR:
return chrono.minuteOfHour();
case SECOND_OF_MINUTE:
return chrono.secondOfMinute();
case MILLIS_OF_SECOND:
return chrono.millisOfSecond();
default:
throw new IndexOutOfBoundsException("Invalid index: " + index);
}
}
/**
* Gets the value of the field at the specifed index.
* <p>
* This method is required to support the <code>ReadablePartial
* interface. The supported fields are HourOfDay, MinuteOfHour,
* SecondOfMinute and MillisOfSecond.
*
* @param index the index, zero to three
* @return the value
* @throws IndexOutOfBoundsException if the index is invalid
*/
public int getValue(int index) {
switch (index) {
case HOUR_OF_DAY:
return getChronology().hourOfDay().get(getLocalMillis());
case MINUTE_OF_HOUR:
return getChronology().minuteOfHour().get(getLocalMillis());
case SECOND_OF_MINUTE:
return getChronology().secondOfMinute().get(getLocalMillis());
case MILLIS_OF_SECOND:
return getChronology().millisOfSecond().get(getLocalMillis());
default:
throw new IndexOutOfBoundsException("Invalid index: " + index);
}
}
//-----------------------------------------------------------------------
/**
* Get the value of one of the fields of time.
* <p>
* This method gets the value of the specified field.
* For example:
* <pre>
* DateTime dt = new DateTime();
* int hourOfDay = dt.get(DateTimeFieldType.hourOfDay());
* </pre>
*
* @param fieldType a field type, usually obtained from DateTimeFieldType, not null
* @return the value of that field
* @throws IllegalArgumentException if the field type is null
*/
public int get(DateTimeFieldType fieldType) {
if (fieldType == null) {
throw new IllegalArgumentException("The DateTimeFieldType must not be null");
}
if (isSupported(fieldType) == false) {
throw new IllegalArgumentException("Field '" + fieldType + "' is not supported");
}
return fieldType.getField(getChronology()).get(getLocalMillis());
}
/**
* Checks if the field type specified is supported by this
* local time and chronology.
* This can be used to avoid exceptions in {@link #get(DateTimeFieldType)}.
*
* @param type a field type, usually obtained from DateTimeFieldType
* @return true if the field type is supported
*/
public boolean isSupported(DateTimeFieldType type) {
if (type == null) {
return false;
}
if (isSupported(type.getDurationType()) == false) {
return false;
}
DurationFieldType range = type.getRangeDurationType();
return (isSupported(range) || range == DurationFieldType.days());
}
/**
* Checks if the duration type specified is supported by this
* local time and chronology.
*
* @param type a duration type, usually obtained from DurationFieldType
* @return true if the field type is supported
*/
public boolean isSupported(DurationFieldType type) {
if (type == null) {
return false;
}
DurationField field = type.getField(getChronology());
if (TIME_DURATION_TYPES.contains(type) ||
field.getUnitMillis() < getChronology().days().getUnitMillis()) {
return field.isSupported();
}
return false;
}
//-----------------------------------------------------------------------
/**
* Gets the local milliseconds from the Java epoch
* of 1970-01-01T00:00:00 (not fixed to any specific time zone).
*
* @return the number of milliseconds since 1970-01-01T00:00:00
* @since 1.5 (previously private)
*/
protected long getLocalMillis() {
return iLocalMillis;
}
/**
* Gets the chronology of the time.
*
* @return the Chronology that the time is using
*/
public Chronology getChronology() {
return iChronology;
}
//-----------------------------------------------------------------------
/**
* Compares this ReadablePartial with another returning true if the chronology,
* field types and values are equal.
*
* @param partial an object to check against
* @return true if fields and values are equal
*/
public boolean equals(Object partial) {
// override to perform faster
if (this == partial) {
return true;
}
if (partial instanceof LocalTime) {
LocalTime other = (LocalTime) partial;
if (iChronology.equals(other.iChronology)) {
return iLocalMillis == other.iLocalMillis;
}
}
return super.equals(partial);
}
/**
* Compares this partial with another returning an integer
* indicating the order.
* <p>
* The fields are compared in order, from largest to smallest.
* The first field that is non-equal is used to determine the result.
* <p>
* The specified object must be a partial instance whose field types
* match those of this partial.
*
* @param partial an object to check against
* @return negative if this is less, zero if equal, positive if greater
* @throws ClassCastException if the partial is the wrong class
* or if it has field types that don't match
* @throws NullPointerException if the partial is null
*/
public int compareTo(ReadablePartial partial) {
// override to perform faster
if (this == partial) {
return 0;
}
if (partial instanceof LocalTime) {
LocalTime other = (LocalTime) partial;
if (iChronology.equals(other.iChronology)) {
return (iLocalMillis < other.iLocalMillis ? -1 :
(iLocalMillis == other.iLocalMillis ? 0 : 1));
}
}
return super.compareTo(partial);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with different local millis.
* <p>
* The returned object will be a new instance of the same type.
* Only the millis will change, the chronology is kept.
* The returned object will be either be a new instance or <code>this.
*
* @param newMillis the new millis, from 1970-01-01T00:00:00
* @return a copy of this time with different millis
*/
LocalTime withLocalMillis(long newMillis) {
return (newMillis == getLocalMillis() ? this : new LocalTime(newMillis, getChronology()));
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with the partial set of fields replacing
* those from this instance.
* <p>
* For example, if the partial contains an hour and minute then those two
* fields will be changed in the returned instance.
* Unsupported fields are ignored.
* If the partial is null, then <code>this is returned.
*
* @param partial the partial set of fields to apply to this time, null ignored
* @return a copy of this time with a different set of fields
* @throws IllegalArgumentException if any value is invalid
*/
public LocalTime withFields(ReadablePartial partial) {
if (partial == null) {
return this;
}
return withLocalMillis(getChronology().set(partial, getLocalMillis()));
}
/**
* Returns a copy of this time with the specified field set
* to a new value.
* <p>
* For example, if the field type is <code>hourOfDay then the hour of day
* field would be changed in the returned instance.
* If the field type is null, then <code>this is returned.
* <p>
* These lines are equivalent:
* <pre>
* LocalTime updated = dt.withHourOfDay(6);
* LocalTime updated = dt.withField(DateTimeFieldType.hourOfDay(), 6);
* </pre>
*
* @param fieldType the field type to set, not null
* @param value the value to set
* @return a copy of this time with the field set
* @throws IllegalArgumentException if the value is null or invalid
*/
public LocalTime withField(DateTimeFieldType fieldType, int value) {
if (fieldType == null) {
throw new IllegalArgumentException("Field must not be null");
}
if (isSupported(fieldType) == false) {
throw new IllegalArgumentException("Field '" + fieldType + "' is not supported");
}
long instant = fieldType.getField(getChronology()).set(getLocalMillis(), value);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time with the value of the specified
* field increased.
* <p>
* If the addition is zero or the field is null, then <code>this
* is returned.
* <p>
* If the addition causes the maximum value of the field to be exceeded,
* then the value will wrap. Thus 23:59 plus two minutes yields 00:01.
* <p>
* These lines are equivalent:
* <pre>
* LocalTime added = dt.plusHours(6);
* LocalTime added = dt.withFieldAdded(DurationFieldType.hours(), 6);
* </pre>
*
* @param fieldType the field type to add to, not null
* @param amount the amount to add
* @return a copy of this time with the field updated
* @throws IllegalArgumentException if the value is null or invalid
* @throws ArithmeticException if the result exceeds the internal capacity
*/
public LocalTime withFieldAdded(DurationFieldType fieldType, int amount) {
if (fieldType == null) {
throw new IllegalArgumentException("Field must not be null");
}
if (isSupported(fieldType) == false) {
throw new IllegalArgumentException("Field '" + fieldType + "' is not supported");
}
if (amount == 0) {
return this;
}
long instant = fieldType.getField(getChronology()).add(getLocalMillis(), amount);
return withLocalMillis(instant);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with the specified period added.
* <p>
* If the addition is zero, then <code>this is returned.
* <p>
* This method is typically used to add multiple copies of complex
* period instances. Adding one field is best achieved using methods
* like {@link #withFieldAdded(DurationFieldType, int)}
* or {@link #plusHours(int)}.
*
* @param period the period to add to this one, null means zero
* @param scalar the amount of times to add, such as -1 to subtract once
* @return a copy of this time with the period added
* @throws ArithmeticException if the result exceeds the internal capacity
*/
public LocalTime withPeriodAdded(ReadablePeriod period, int scalar) {
if (period == null || scalar == 0) {
return this;
}
long instant = getChronology().add(period, getLocalMillis(), scalar);
return withLocalMillis(instant);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with the specified period added.
* <p>
* If the amount is zero or null, then <code>this is returned.
* <p>
* This method is typically used to add complex period instances.
* Adding one field is best achieved using methods
* like {@link #plusHours(int)}.
*
* @param period the period to add to this one, null means zero
* @return a copy of this time with the period added
* @throws ArithmeticException if the result exceeds the internal capacity
*/
public LocalTime plus(ReadablePeriod period) {
return withPeriodAdded(period, 1);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time plus the specified number of hours.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime added = dt.plusHours(6);
* LocalTime added = dt.plus(Period.hours(6));
* LocalTime added = dt.withFieldAdded(DurationFieldType.hours(), 6);
* </pre>
*
* @param hours the amount of hours to add, may be negative
* @return the new LocalTime plus the increased hours
*/
public LocalTime plusHours(int hours) {
if (hours == 0) {
return this;
}
long instant = getChronology().hours().add(getLocalMillis(), hours);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time plus the specified number of minutes.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime added = dt.plusMinutes(6);
* LocalTime added = dt.plus(Period.minutes(6));
* LocalTime added = dt.withFieldAdded(DurationFieldType.minutes(), 6);
* </pre>
*
* @param minutes the amount of minutes to add, may be negative
* @return the new LocalTime plus the increased minutes
*/
public LocalTime plusMinutes(int minutes) {
if (minutes == 0) {
return this;
}
long instant = getChronology().minutes().add(getLocalMillis(), minutes);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time plus the specified number of seconds.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime added = dt.plusSeconds(6);
* LocalTime added = dt.plus(Period.seconds(6));
* LocalTime added = dt.withFieldAdded(DurationFieldType.seconds(), 6);
* </pre>
*
* @param seconds the amount of seconds to add, may be negative
* @return the new LocalTime plus the increased seconds
*/
public LocalTime plusSeconds(int seconds) {
if (seconds == 0) {
return this;
}
long instant = getChronology().seconds().add(getLocalMillis(), seconds);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time plus the specified number of millis.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime added = dt.plusMillis(6);
* LocalTime added = dt.plus(Period.millis(6));
* LocalTime added = dt.withFieldAdded(DurationFieldType.millis(), 6);
* </pre>
*
* @param millis the amount of millis to add, may be negative
* @return the new LocalTime plus the increased millis
*/
public LocalTime plusMillis(int millis) {
if (millis == 0) {
return this;
}
long instant = getChronology().millis().add(getLocalMillis(), millis);
return withLocalMillis(instant);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with the specified period taken away.
* <p>
* If the amount is zero or null, then <code>this is returned.
* <p>
* This method is typically used to subtract complex period instances.
* Subtracting one field is best achieved using methods
* like {@link #minusHours(int)}.
*
* @param period the period to reduce this instant by
* @return a copy of this time with the period taken away
* @throws ArithmeticException if the result exceeds the internal capacity
*/
public LocalTime minus(ReadablePeriod period) {
return withPeriodAdded(period, -1);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time minus the specified number of hours.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime subtracted = dt.minusHours(6);
* LocalTime subtracted = dt.minus(Period.hours(6));
* LocalTime subtracted = dt.withFieldAdded(DurationFieldType.hours(), -6);
* </pre>
*
* @param hours the amount of hours to subtract, may be negative
* @return the new LocalTime minus the increased hours
*/
public LocalTime minusHours(int hours) {
if (hours == 0) {
return this;
}
long instant = getChronology().hours().subtract(getLocalMillis(), hours);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time minus the specified number of minutes.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime subtracted = dt.minusMinutes(6);
* LocalTime subtracted = dt.minus(Period.minutes(6));
* LocalTime subtracted = dt.withFieldAdded(DurationFieldType.minutes(), -6);
* </pre>
*
* @param minutes the amount of minutes to subtract, may be negative
* @return the new LocalTime minus the increased minutes
*/
public LocalTime minusMinutes(int minutes) {
if (minutes == 0) {
return this;
}
long instant = getChronology().minutes().subtract(getLocalMillis(), minutes);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time minus the specified number of seconds.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime subtracted = dt.minusSeconds(6);
* LocalTime subtracted = dt.minus(Period.seconds(6));
* LocalTime subtracted = dt.withFieldAdded(DurationFieldType.seconds(), -6);
* </pre>
*
* @param seconds the amount of seconds to subtract, may be negative
* @return the new LocalTime minus the increased seconds
*/
public LocalTime minusSeconds(int seconds) {
if (seconds == 0) {
return this;
}
long instant = getChronology().seconds().subtract(getLocalMillis(), seconds);
return withLocalMillis(instant);
}
/**
* Returns a copy of this time minus the specified number of millis.
* <p>
* This LocalTime instance is immutable and unaffected by this method call.
* <p>
* The following three lines are identical in effect:
* <pre>
* LocalTime subtracted = dt.minusMillis(6);
* LocalTime subtracted = dt.minus(Period.millis(6));
* LocalTime subtracted = dt.withFieldAdded(DurationFieldType.millis(), -6);
* </pre>
*
* @param millis the amount of millis to subtract, may be negative
* @return the new LocalTime minus the increased millis
*/
public LocalTime minusMillis(int millis) {
if (millis == 0) {
return this;
}
long instant = getChronology().millis().subtract(getLocalMillis(), millis);
return withLocalMillis(instant);
}
//-----------------------------------------------------------------------
/**
* Gets the property object for the specified type, which contains
* many useful methods.
*
* @param fieldType the field type to get the chronology for
* @return the property object
* @throws IllegalArgumentException if the field is null or unsupported
*/
public Property property(DateTimeFieldType fieldType) {
if (fieldType == null) {
throw new IllegalArgumentException("The DateTimeFieldType must not be null");
}
if (isSupported(fieldType) == false) {
throw new IllegalArgumentException("Field '" + fieldType + "' is not supported");
}
return new Property(this, fieldType.getField(getChronology()));
}
//-----------------------------------------------------------------------
/**
* Get the hour of day field value.
*
* @return the hour of day
*/
public int getHourOfDay() {
return getChronology().hourOfDay().get(getLocalMillis());
}
/**
* Get the minute of hour field value.
*
* @return the minute of hour
*/
public int getMinuteOfHour() {
return getChronology().minuteOfHour().get(getLocalMillis());
}
/**
* Get the second of minute field value.
*
* @return the second of minute
*/
public int getSecondOfMinute() {
return getChronology().secondOfMinute().get(getLocalMillis());
}
/**
* Get the millis of second field value.
*
* @return the millis of second
*/
public int getMillisOfSecond() {
return getChronology().millisOfSecond().get(getLocalMillis());
}
/**
* Get the millis of day field value.
*
* @return the millis of day
*/
public int getMillisOfDay() {
return getChronology().millisOfDay().get(getLocalMillis());
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this time with the hour of day field updated.
* <p>
* LocalTime is immutable, so there are no set methods.
* Instead, this method returns a new instance with the value of
* hour of day changed.
*
* @param hour the hour of day to set
* @return a copy of this object with the field set
* @throws IllegalArgumentException if the value is invalid
*/
public LocalTime withHourOfDay(int hour) {
return withLocalMillis(getChronology().hourOfDay().set(getLocalMillis(), hour));
}
/**
* Returns a copy of this time with the minute of hour field updated.
* <p>
* LocalTime is immutable, so there are no set methods.
* Instead, this method returns a new instance with the value of
* minute of hour changed.
*
* @param minute the minute of hour to set
* @return a copy of this object with the field set
* @throws IllegalArgumentException if the value is invalid
*/
public LocalTime withMinuteOfHour(int minute) {
return withLocalMillis(getChronology().minuteOfHour().set(getLocalMillis(), minute));
}
/**
* Returns a copy of this time with the second of minute field updated.
* <p>
* LocalTime is immutable, so there are no set methods.
* Instead, this method returns a new instance with the value of
* second of minute changed.
*
* @param second the second of minute to set
* @return a copy of this object with the field set
* @throws IllegalArgumentException if the value is invalid
*/
public LocalTime withSecondOfMinute(int second) {
return withLocalMillis(getChronology().secondOfMinute().set(getLocalMillis(), second));
}
/**
* Returns a copy of this time with the millis of second field updated.
* <p>
* LocalTime is immutable, so there are no set methods.
* Instead, this method returns a new instance with the value of
* millis of second changed.
*
* @param millis the millis of second to set
* @return a copy of this object with the field set
* @throws IllegalArgumentException if the value is invalid
*/
public LocalTime withMillisOfSecond(int millis) {
return withLocalMillis(getChronology().millisOfSecond().set(getLocalMillis(), millis));
}
/**
* Returns a copy of this time with the millis of day field updated.
* <p>
* LocalTime is immutable, so there are no set methods.
* Instead, this method returns a new instance with the value of
* millis of day changed.
*
* @param millis the millis of day to set
* @return a copy of this object with the field set
* @throws IllegalArgumentException if the value is invalid
*/
public LocalTime withMillisOfDay(int millis) {
return withLocalMillis(getChronology().millisOfDay().set(getLocalMillis(), millis));
}
//-----------------------------------------------------------------------
/**
* Get the hour of day field property which provides access to advanced functionality.
*
* @return the hour of day property
*/
public Property hourOfDay() {
return new Property(this, getChronology().hourOfDay());
}
/**
* Get the minute of hour field property which provides access to advanced functionality.
*
* @return the minute of hour property
*/
public Property minuteOfHour() {
return new Property(this, getChronology().minuteOfHour());
}
/**
* Get the second of minute field property which provides access to advanced functionality.
*
* @return the second of minute property
*/
public Property secondOfMinute() {
return new Property(this, getChronology().secondOfMinute());
}
/**
* Get the millis of second property which provides access to advanced functionality.
*
* @return the millis of second property
*/
public Property millisOfSecond() {
return new Property(this, getChronology().millisOfSecond());
}
/**
* Get the millis of day property which provides access to advanced functionality.
*
* @return the millis of day property
*/
public Property millisOfDay() {
return new Property(this, getChronology().millisOfDay());
}
//-----------------------------------------------------------------------
/**
* Converts this LocalTime to a full datetime using the default time zone
* setting the time fields from this instance and the date fields from
* the current date.
*
* @return this time as a datetime using todays date
*/
public DateTime toDateTimeToday() {
return toDateTimeToday(null);
}
/**
* Converts this LocalTime to a full datetime using the specified time zone
* setting the time fields from this instance and the date fields from
* the current time.
* <p>
* This method uses the chronology from this instance plus the time zone
* specified.
*
* @param zone the zone to use, null means default
* @return this time as a datetime using todays date
*/
public DateTime toDateTimeToday(DateTimeZone zone) {
Chronology chrono = getChronology().withZone(zone);
long instantMillis = DateTimeUtils.currentTimeMillis();
long resolved = chrono.set(this, instantMillis);
return new DateTime(resolved, chrono);
}
//-----------------------------------------------------------------------
/**
* Output the time in ISO8601 format (HH:mm:ss.SSS).
*
* @return ISO8601 time formatted string.
*/
@ToString
public String toString() {
return ISODateTimeFormat.time().print(this);
}
/**
* Output the time using the specified format pattern.
*
* @param pattern the pattern specification, null means use <code>toString
* @see org.joda.time.format.DateTimeFormat
*/
public String toString(String pattern) {
if (pattern == null) {
return toString();
}
return DateTimeFormat.forPattern(pattern).print(this);
}
/**
* Output the time using the specified format pattern.
*
* @param pattern the pattern specification, null means use <code>toString
* @param locale Locale to use, null means default
* @see org.joda.time.format.DateTimeFormat
*/
public String toString(String pattern, Locale locale) throws IllegalArgumentException {
if (pattern == null) {
return toString();
}
return DateTimeFormat.forPattern(pattern).withLocale(locale).print(this);
}
//-----------------------------------------------------------------------
/**
* LocalTime.Property binds a LocalTime to a DateTimeField allowing
* powerful datetime functionality to be easily accessed.
* <p>
* The simplest use of this class is as an alternative get method, here used to
* get the minute '30'.
* <pre>
* LocalTime dt = new LocalTime(12, 30);
* int year = dt.minuteOfHour().get();
* </pre>
* <p>
* Methods are also provided that allow time modification. These return
* new instances of LocalTime - they do not modify the original. The example
* below yields two independent immutable date objects 2 hours apart.
* <pre>
* LocalTime dt1230 = new LocalTime(12, 30);
* LocalTime dt1430 = dt1230.hourOfDay().setCopy(14);
* </pre>
* <p>
* LocalTime.Property itself is thread-safe and immutable, as well as the
* LocalTime being operated on.
*
* @author Stephen Colebourne
* @author Brian S O'Neill
* @since 1.3
*/
public static final class Property extends AbstractReadableInstantFieldProperty {
/** Serialization version */
private static final long serialVersionUID = -325842547277223L;
/** The instant this property is working against */
private transient LocalTime iInstant;
/** The field this property is working against */
private transient DateTimeField iField;
/**
* Constructor.
*
* @param instant the instant to set
* @param field the field to use
*/
Property(LocalTime instant, DateTimeField field) {
super();
iInstant = instant;
iField = field;
}
/**
* Writes the property in a safe serialization format.
*/
private void writeObject(ObjectOutputStream oos) throws IOException {
oos.writeObject(iInstant);
oos.writeObject(iField.getType());
}
/**
* Reads the property from a safe serialization format.
*/
private void readObject(ObjectInputStream oos) throws IOException, ClassNotFoundException {
iInstant = (LocalTime) oos.readObject();
DateTimeFieldType type = (DateTimeFieldType) oos.readObject();
iField = type.getField(iInstant.getChronology());
}
//-----------------------------------------------------------------------
/**
* Gets the field being used.
*
* @return the field
*/
public DateTimeField getField() {
return iField;
}
/**
* Gets the milliseconds of the time that this property is linked to.
*
* @return the milliseconds
*/
protected long getMillis() {
return iInstant.getLocalMillis();
}
/**
* Gets the chronology of the datetime that this property is linked to.
*
* @return the chronology
* @since 1.4
*/
protected Chronology getChronology() {
return iInstant.getChronology();
}
/**
* Gets the LocalTime object linked to this property.
*
* @return the linked LocalTime
*/
public LocalTime getLocalTime() {
return iInstant;
}
//-----------------------------------------------------------------------
/**
* Adds to this field in a copy of this LocalTime.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param value the value to add to the field in the copy
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime addCopy(int value) {
return iInstant.withLocalMillis(iField.add(iInstant.getLocalMillis(), value));
}
/**
* Adds to this field in a copy of this LocalTime.
* If the addition exceeds the maximum value (eg. 23:59) it will
* wrap to the minimum value (eg. 00:00).
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param value the value to add to the field in the copy
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime addCopy(long value) {
return iInstant.withLocalMillis(iField.add(iInstant.getLocalMillis(), value));
}
/**
* Adds to this field in a copy of this LocalTime.
* If the addition exceeds the maximum value (eg. 23:59) then
* an exception will be thrown.
* Contrast this behaviour to {@link #addCopy(int)}.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param value the value to add to the field in the copy
* @return a copy of the LocalTime with the field value changed
* @throws IllegalArgumentException if the result is invalid
*/
public LocalTime addNoWrapToCopy(int value) {
long millis = iField.add(iInstant.getLocalMillis(), value);
long rounded = iInstant.getChronology().millisOfDay().get(millis);
if (rounded != millis) {
throw new IllegalArgumentException("The addition exceeded the boundaries of LocalTime");
}
return iInstant.withLocalMillis(millis);
}
/**
* Adds to this field, possibly wrapped, in a copy of this LocalTime.
* A field wrapped operation only changes this field.
* Thus 10:59 plusWrapField one minute goes to 10:00.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param value the value to add to the field in the copy
* @return a copy of the LocalTime with the field value changed
* @throws IllegalArgumentException if the value isn't valid
*/
public LocalTime addWrapFieldToCopy(int value) {
return iInstant.withLocalMillis(iField.addWrapField(iInstant.getLocalMillis(), value));
}
//-----------------------------------------------------------------------
/**
* Sets this field in a copy of the LocalTime.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param value the value to set the field in the copy to
* @return a copy of the LocalTime with the field value changed
* @throws IllegalArgumentException if the value isn't valid
*/
public LocalTime setCopy(int value) {
return iInstant.withLocalMillis(iField.set(iInstant.getLocalMillis(), value));
}
/**
* Sets this field in a copy of the LocalTime to a parsed text value.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param text the text value to set
* @param locale optional locale to use for selecting a text symbol
* @return a copy of the LocalTime with the field value changed
* @throws IllegalArgumentException if the text value isn't valid
*/
public LocalTime setCopy(String text, Locale locale) {
return iInstant.withLocalMillis(iField.set(iInstant.getLocalMillis(), text, locale));
}
/**
* Sets this field in a copy of the LocalTime to a parsed text value.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @param text the text value to set
* @return a copy of the LocalTime with the field value changed
* @throws IllegalArgumentException if the text value isn't valid
*/
public LocalTime setCopy(String text) {
return setCopy(text, null);
}
//-----------------------------------------------------------------------
/**
* Returns a new LocalTime with this field set to the maximum value
* for this field.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @return a copy of the LocalTime with this field set to its maximum
*/
public LocalTime withMaximumValue() {
return setCopy(getMaximumValue());
}
/**
* Returns a new LocalTime with this field set to the minimum value
* for this field.
* <p>
* The LocalTime attached to this property is unchanged by this call.
*
* @return a copy of the LocalTime with this field set to its minimum
*/
public LocalTime withMinimumValue() {
return setCopy(getMinimumValue());
}
//-----------------------------------------------------------------------
/**
* Rounds to the lowest whole unit of this field on a copy of this
* LocalTime.
* <p>
* For example, rounding floor on the hourOfDay field of a LocalTime
* where the time is 10:30 would result in new LocalTime with the
* time of 10:00.
*
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime roundFloorCopy() {
return iInstant.withLocalMillis(iField.roundFloor(iInstant.getLocalMillis()));
}
/**
* Rounds to the highest whole unit of this field on a copy of this
* LocalTime.
* <p>
* For example, rounding floor on the hourOfDay field of a LocalTime
* where the time is 10:30 would result in new LocalTime with the
* time of 11:00.
*
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime roundCeilingCopy() {
return iInstant.withLocalMillis(iField.roundCeiling(iInstant.getLocalMillis()));
}
/**
* Rounds to the nearest whole unit of this field on a copy of this
* LocalTime, favoring the floor if halfway.
*
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime roundHalfFloorCopy() {
return iInstant.withLocalMillis(iField.roundHalfFloor(iInstant.getLocalMillis()));
}
/**
* Rounds to the nearest whole unit of this field on a copy of this
* LocalTime, favoring the ceiling if halfway.
*
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime roundHalfCeilingCopy() {
return iInstant.withLocalMillis(iField.roundHalfCeiling(iInstant.getLocalMillis()));
}
/**
* Rounds to the nearest whole unit of this field on a copy of this
* LocalTime. If halfway, the ceiling is favored over the floor
* only if it makes this field's value even.
*
* @return a copy of the LocalTime with the field value changed
*/
public LocalTime roundHalfEvenCopy() {
return iInstant.withLocalMillis(iField.roundHalfEven(iInstant.getLocalMillis()));
}
}
}
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