ical4j 4.1.1 · net.fortuna.ical4j.model.component.VEvent

$Id$ [Apr 5, 2004] Defines an iCalendar VEVENT component.

      4.6.1 Event Component

         Component Name: "VEVENT"

         Purpose: Provide a grouping of component properties that describe an
         event.

         Format Definition: A "VEVENT" calendar component is defined by the
         following notation:

           eventc     = "BEGIN" ":" "VEVENT" CRLF
                        eventprop *alarmc
                        "END" ":" "VEVENT" CRLF

           eventprop  = *(

                      ; the following are optional,
                      ; but MUST NOT occur more than once

                      class / created / description / dtstart / geo /
                      last-mod / location / organizer / priority /
                      dtstamp / seq / status / summary / transp /
                      uid / url / recurid /

                      ; either 'dtend' or 'duration' may appear in
                      ; a 'eventprop', but 'dtend' and 'duration'
                      ; MUST NOT occur in the same 'eventprop'

                      dtend / duration /

                      ; the following are optional,
                      ; and MAY occur more than once

                      attach / attendee / categories / comment /
                      contact / exdate / exrule / rstatus / related /
                      resources / rdate / rrule / x-prop

                      )

Example 1 - Creating a new all-day event:


java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(java.util.Calendar.MONTH, java.util.Calendar.DECEMBER);
cal.set(java.util.Calendar.DAY_OF_MONTH, 25);

VEvent christmas = new VEvent(cal.getTime(), "Christmas Day");

// initialise as an all-day event..
christmas.getProperties().getProperty(Property.DTSTART).getParameters().add(
        Value.DATE);

// add timezone information..
VTimeZone tz = VTimeZone.getDefault();
TzId tzParam = new TzId(tz.getProperties().getProperty(Property.TZID)
        .getValue());
christmas.getProperties().getProperty(Property.DTSTART).getParameters().add(
        tzParam);

Example 2 - Creating an event of one (1) hour duration:


java.util.Calendar cal = java.util.Calendar.getInstance();
// tomorrow..
cal.add(java.util.Calendar.DAY_OF_MONTH, 1);
cal.set(java.util.Calendar.HOUR_OF_DAY, 9);
cal.set(java.util.Calendar.MINUTE, 30);

VEvent meeting = new VEvent(cal.getTime(), 1000 * 60 * 60, "Progress Meeting");

// add timezone information..
VTimeZone tz = VTimeZone.getDefault();
TzId tzParam = new TzId(tz.getProperties().getProperty(Property.TZID)
        .getValue());
meeting.getProperties().getProperty(Property.DTSTART).getParameters().add(
        tzParam);

Example 3 - Retrieve a list of periods representing a recurring event in a specified range:


Calendar weekday9AM = Calendar.getInstance();
weekday9AM.set(2005, Calendar.MARCH, 7, 9, 0, 0);
weekday9AM.set(Calendar.MILLISECOND, 0);

Calendar weekday5PM = Calendar.getInstance();
weekday5PM.set(2005, Calendar.MARCH, 7, 17, 0, 0);
weekday5PM.set(Calendar.MILLISECOND, 0);

// Do the recurrence until December 31st.
Calendar untilCal = Calendar.getInstance();
untilCal.set(2005, Calendar.DECEMBER, 31);
untilCal.set(Calendar.MILLISECOND, 0);

// 9:00AM to 5:00PM Rule
Recur recur = new Recur(Recur.WEEKLY, untilCal.getTime());
recur.getDayList().add(WeekDay.MO);
recur.getDayList().add(WeekDay.TU);
recur.getDayList().add(WeekDay.WE);
recur.getDayList().add(WeekDay.TH);
recur.getDayList().add(WeekDay.FR);
recur.setInterval(3);
recur.setWeekStartDay(WeekDay.MO.getDay());
RRule rrule = new RRule(recur);

Summary summary = new Summary("TEST EVENTS THAT HAPPEN 9-5 MON-FRI");

weekdayNineToFiveEvents = new VEvent();
weekdayNineToFiveEvents.add(rrule);
weekdayNineToFiveEvents.add(summary);
weekdayNineToFiveEvents.add(new DtStart(weekday9AM.getTime()));
weekdayNineToFiveEvents.add(new DtEnd(weekday5PM.getTime()));

// Test Start 04/01/2005, End One month later.
// Query Calendar Start and End Dates.
Calendar queryStartDate = Calendar.getInstance();
queryStartDate.set(2005, Calendar.APRIL, 1, 14, 47, 0);
queryStartDate.set(Calendar.MILLISECOND, 0);
Calendar queryEndDate = Calendar.getInstance();
queryEndDate.set(2005, Calendar.MAY, 1, 11, 15, 0);
queryEndDate.set(Calendar.MILLISECOND, 0);

// This range is monday to friday every three weeks, starting from
// March 7th 2005, which means for our query dates we need
// April 18th through to the 22nd.
PeriodList periods = weekdayNineToFiveEvents.getPeriods(queryStartDate
        .getTime(), queryEndDate.getTime());

Nested and Inner Type Summary

Modifier and Type	Class and Description
public static class	VEvent.Factory

Field Summary

Modifier and Type	Field and Description
private static final Map<Method, Validator<VEvent>>	methodValidators
private static final long	serialVersionUID Hides net.fortuna.ical4j.model.component.CalendarComponent.serialVersionUID.

Inherited from net.fortuna.ical4j.model.component.CalendarComponent:: EMPTY_VALIDATOR

Constructor Summary

Access	Constructor and Description
public	VEvent() Default constructor.
public	VEvent(boolean initialise)
public	VEvent(final PropertyList a list of properties properties) Constructor.
public	VEvent(final PropertyList a list of properties properties, final ComponentList<VAlarm> a list of alarms alarms) Constructor.
public	VEvent(final Temporal the start date of the new event start, final String the event summary summary) Constructs a new VEVENT instance starting at the specified time with the specified summary.
public	VEvent(final Temporal the start date of the new event start, final Temporal the end date of the new event end, final String the event summary summary) Constructs a new VEVENT instance starting and ending at the specified times with the specified summary.
public	VEvent(final Temporal the start date of the new event start, final TemporalAmount the duration of the new event duration, final String the event summary summary) Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified summary.

Method Summary

Modifier and Type	Method and Description
public VEvent	copy() Overrides net.fortuna.ical4j.model.Component.copy. Implements net.fortuna.ical4j.model.Prototype.copy. Create a (deep) copy of this component.
public boolean	equals(final Object the reference object with which to compare. arg0) Overrides net.fortuna.ical4j.model.Component.equals. Indicates whether some other object is "equal to" this one.
public ComponentList<Component>	getComponentList() Implements net.fortuna.ical4j.model.ComponentListAccessor.getComponentList.
public final <T extends Temporal> List<Period<T>>	Returns: a normalised list of periods representing consumed time for this event getConsumedTime(final Period<T> the range to check for consumed time range) Returns a normalised list of periods representing the consumed time for this event.
public final <T extends Temporal> List<Period<T>>	Returns: a list of periods representing consumed time for this event getConsumedTime(final Period<T> the range to check for consumed time range, final boolean indicate whether the returned list of periods should be normalised normalise) Returns a list of periods representing the consumed time for this event in the specified range.
public final Optional<DtStamp>	Returns: the optional date-stamp property getDateStamp() Deprecated use `ChangeManagementPropertyAccessor#getDateTimeStamp()`
public final <T extends Temporal> Optional<DtEnd<T>>	Returns: a DtEnd instance, or null if one cannot be derived getEndDate() Returns the end date of this event.
public final <T extends Temporal> Optional<DtEnd<T>>	Returns: The end for this VEVENT. getEndDate(final boolean specifies whether to derive an end date from the event duration where an end date is not found deriveFromDuration) Convenience method to pull the DTEND out of the property list.
public final <T extends Temporal> VEvent	Returns: a single non-recurring event instance for the specified date, or null if the event doesn't occur on the specified date getOccurrence(final T a date on which the occurence should occur date) Deprecated use `RecurrenceSupport#getOccurrences(Period)` Returns a single occurrence of a recurring event.
public final <T extends Temporal> Optional<DtStart<T>>	Returns: The DtStart object representation of the start Date getStartDate() Deprecated use `DateTimePropertyAccessor#getDateTimeStart()` Convenience method to pull the DTSTART out of the property list.
public final Optional<Transp>	Returns: the optional time transparency property for an event getTransparency() Deprecated use `DateTimePropertyAccessor#getTimeTransparency()`
public int	hashCode() Overrides net.fortuna.ical4j.model.Component.hashCode. Returns a hash code value for this object.
protected ComponentFactory<VEvent>	newFactory() Implements abstract net.fortuna.ical4j.model.Component.newFactory. Returns a new component factory used to create deep copies.
public void	setComponentList(ComponentList<Component> components) Implements net.fortuna.ical4j.model.ComponentContainer.setComponentList.
public ValidationResult	validate(final boolean indicates whether to validate the component's properties recurse) Implements abstract net.fortuna.ical4j.model.Component.validate. Perform validation on a component.
public ValidationResult	validate(Method the applicable method method) Overrides net.fortuna.ical4j.model.component.CalendarComponent.validate. Performs method-specific ITIP validation.

Inherited from net.fortuna.ical4j.model.component.CalendarComponent:: validateAdd validateCancel validateCounter validateDeclineCounter validatePublish validateRefresh validateReply validateRequest

Field Detail

methodValidators	back to summary
private static final Map<Method, Validator<VEvent>> methodValidators

serialVersionUID	back to summary
private static final long serialVersionUID Hides net.fortuna.ical4j.model.component.CalendarComponent.serialVersionUID.

Constructor Detail

VEvent	back to summary
public VEvent() Default constructor.

VEvent	back to summary
public VEvent(boolean initialise)

VEvent	back to summary
public VEvent(final PropertyList properties) Constructor. Parameters properties:PropertyList a list of properties

VEvent

back to summary

public VEvent(final PropertyList properties)

Constructor.

Parameters

properties:PropertyList: a list of properties

VEvent	back to summary
public VEvent(final PropertyList properties, final ComponentList<VAlarm> alarms) Constructor. Parameters properties:PropertyList a list of properties alarms:ComponentList<VAlarm> a list of alarms

VEvent

back to summary

public VEvent(final PropertyList properties, final ComponentList<VAlarm> alarms)

Constructor.

Parameters

properties:PropertyList: a list of properties
alarms:ComponentList<VAlarm>: a list of alarms

VEvent	back to summary
public VEvent(final Temporal start, final String summary) Constructs a new VEVENT instance starting at the specified time with the specified summary. Parameters start:Temporal the start date of the new event summary:String the event summary

VEvent

back to summary

public VEvent(final Temporal start, final String summary)

Constructs a new VEVENT instance starting at the specified time with the specified summary.

Parameters

start:Temporal: the start date of the new event
summary:String: the event summary

VEvent	back to summary
public VEvent(final Temporal start, final Temporal end, final String summary) Constructs a new VEVENT instance starting and ending at the specified times with the specified summary. Parameters start:Temporal the start date of the new event end:Temporal the end date of the new event summary:String the event summary

VEvent

back to summary

public VEvent(final Temporal start, final Temporal end, final String summary)

Constructs a new VEVENT instance starting and ending at the specified times with the specified summary.

Parameters

start:Temporal: the start date of the new event
end:Temporal: the end date of the new event
summary:String: the event summary

VEvent	back to summary
public VEvent(final Temporal start, final TemporalAmount duration, final String summary) Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified summary. Parameters start:Temporal the start date of the new event duration:TemporalAmount the duration of the new event summary:String the event summary

VEvent

back to summary

public VEvent(final Temporal start, final TemporalAmount duration, final String summary)

Constructs a new VEVENT instance starting at the specified times, for the specified duration, with the specified summary.

Parameters

start:Temporal: the start date of the new event
duration:TemporalAmount: the duration of the new event
summary:String: the event summary

Method Detail

copy	back to summary
public VEvent copy() Overrides net.fortuna.ical4j.model.Component.copy. Implements net.fortuna.ical4j.model.Prototype.copy. Doc from net.fortuna.ical4j.model.Component.copy. Create a (deep) copy of this component. Returns:VEvent the component copy Annotations @Override

copy

back to summary

public VEvent copy()

Overrides net.fortuna.ical4j.model.Component.copy.

Implements net.fortuna.ical4j.model.Prototype.copy.

Doc from net.fortuna.ical4j.model.Component.copy.

Create a (deep) copy of this component.

Returns:VEvent

the component copy

Annotations

@Override

equals back to summary

equals	back to summary
public boolean equals(final Object arg0) Overrides net.fortuna.ical4j.model.Component.equals. Doc from net.fortuna.ical4j.model.Component.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Parameters arg0:Object Doc from java.lang.Object.equals. the reference object with which to compare. Returns:boolean Doc from java.lang.Object.equals. `true` if this object is the same as the obj argument; `false` otherwise. Annotations @Override

public boolean equals(final Object arg0)

Overrides net.fortuna.ical4j.model.Component.equals.

Doc from net.fortuna.ical4j.model.Component.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

arg0:Object

Doc from java.lang.Object.equals.

the reference object with which to compare.

Returns:boolean

Doc from java.lang.Object.equals.

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

getComponentList	back to summary
public ComponentList<Component> getComponentList() Implements net.fortuna.ical4j.model.ComponentListAccessor.getComponentList. Annotations @Override

getComponentList

back to summary

public ComponentList<Component> getComponentList()

Implements net.fortuna.ical4j.model.ComponentListAccessor.getComponentList.

Annotations

@Override

getConsumedTime	back to summary
public final <T extends Temporal> List<Period<T>> getConsumedTime(final Period<T> range) Returns a normalised list of periods representing the consumed time for this event. Parameters range:Period<T> the range to check for consumed time Returns:List<Period<T>> a normalised list of periods representing consumed time for this event

getConsumedTime

back to summary

public final <T extends Temporal> List<Period<T>> getConsumedTime(final Period<T> range)

Returns a normalised list of periods representing the consumed time for this event.

Parameters

range:Period<T>: the range to check for consumed time

Returns:List<Period<T>>

a normalised list of periods representing consumed time for this event

getConsumedTime	back to summary
public final <T extends Temporal> List<Period<T>> getConsumedTime(final Period<T> range, final boolean normalise) Returns a list of periods representing the consumed time for this event in the specified range. Note that the returned list may contain a single period for non-recurring components or multiple periods for recurring components. If no time is consumed by this event an empty list is returned. Parameters range:Period<T> the range to check for consumed time normalise:boolean indicate whether the returned list of periods should be normalised Returns:List<Period<T>> a list of periods representing consumed time for this event

getConsumedTime

back to summary

public final <T extends Temporal> List<Period<T>> getConsumedTime(final Period<T> range, final boolean normalise)

Returns a list of periods representing the consumed time for this event in the specified range. Note that the returned list may contain a single period for non-recurring components or multiple periods for recurring components. If no time is consumed by this event an empty list is returned.

Parameters

range:Period<T>: the range to check for consumed time
normalise:boolean: indicate whether the returned list of periods should be normalised

Returns:List<Period<T>>

a list of periods representing consumed time for this event

getDateStamp	back to summary
public final Optional<DtStamp> getDateStamp() Deprecated use `ChangeManagementPropertyAccessor#getDateTimeStamp()` Returns:Optional<DtStamp> the optional date-stamp property Annotations @Deprecated

getEndDate	back to summary
public final <T extends Temporal> Optional<DtEnd<T>> getEndDate() Returns the end date of this event. Where an end date is not available it will be derived from the event duration. Returns:Optional<DtEnd<T>> a DtEnd instance, or null if one cannot be derived

getEndDate

back to summary

public final <T extends Temporal> Optional<DtEnd<T>> getEndDate()

Returns the end date of this event. Where an end date is not available it will be derived from the event duration.

Returns:Optional<DtEnd<T>>: a DtEnd instance, or null if one cannot be derived

getEndDate	back to summary
public final <T extends Temporal> Optional<DtEnd<T>> getEndDate(final boolean deriveFromDuration) Convenience method to pull the DTEND out of the property list. If DTEND was not specified, use the DTSTART + DURATION to calculate it. Parameters deriveFromDuration:boolean specifies whether to derive an end date from the event duration where an end date is not found Returns:Optional<DtEnd<T>> The end for this VEVENT.

getEndDate

back to summary

public final <T extends Temporal> Optional<DtEnd<T>> getEndDate(final boolean deriveFromDuration)

Convenience method to pull the DTEND out of the property list. If DTEND was not specified, use the DTSTART + DURATION to calculate it.

Parameters

deriveFromDuration:boolean: specifies whether to derive an end date from the event duration where an end date is not found

Returns:Optional<DtEnd<T>>

The end for this VEVENT.

getOccurrence back to summary

getOccurrence	back to summary
public final <T extends Temporal> VEvent getOccurrence(final T date) Deprecated use `RecurrenceSupport#getOccurrences(Period)` Returns a single occurrence of a recurring event. Parameters date:T a date on which the occurence should occur Returns:VEvent a single non-recurring event instance for the specified date, or null if the event doesn't occur on the specified date Annotations @Deprecated

public final <T extends Temporal> VEvent getOccurrence(final T date)

Deprecated

use RecurrenceSupport#getOccurrences(Period)

Returns a single occurrence of a recurring event.

Parameters

date:T: a date on which the occurence should occur

Returns:VEvent

a single non-recurring event instance for the specified date, or null if the event doesn't occur on the specified date

Annotations

@Deprecated

getStartDate back to summary

getStartDate	back to summary
public final <T extends Temporal> Optional<DtStart<T>> getStartDate() Deprecated use `DateTimePropertyAccessor#getDateTimeStart()` Convenience method to pull the DTSTART out of the property list. Returns:Optional<DtStart<T>> The DtStart object representation of the start Date Annotations @Deprecated

public final <T extends Temporal> Optional<DtStart<T>> getStartDate()

Deprecated

use DateTimePropertyAccessor#getDateTimeStart()

Convenience method to pull the DTSTART out of the property list.

Returns:Optional<DtStart<T>>

The DtStart object representation of the start Date

Annotations

@Deprecated

getTransparency	back to summary
public final Optional<Transp> getTransparency() Deprecated use `DateTimePropertyAccessor#getTimeTransparency()` Returns:Optional<Transp> the optional time transparency property for an event Annotations @Deprecated

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides net.fortuna.ical4j.model.Component.hashCode. Doc from net.fortuna.ical4j.model.Component.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Returns:int Doc from java.lang.Object.hashCode. a hash code value for this object Annotations @Override

public int hashCode()

Overrides net.fortuna.ical4j.model.Component.hashCode.

Doc from net.fortuna.ical4j.model.Component.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

Doc from java.lang.Object.hashCode.

a hash code value for this object

Annotations

@Override

newFactory	back to summary
protected ComponentFactory<VEvent> newFactory() Implements abstract net.fortuna.ical4j.model.Component.newFactory. Doc from net.fortuna.ical4j.model.Component.newFactory. Returns a new component factory used to create deep copies. Returns:ComponentFactory<VEvent> a component factory instance Annotations @Override

newFactory

back to summary

protected ComponentFactory<VEvent> newFactory()

Implements abstract net.fortuna.ical4j.model.Component.newFactory.

Doc from net.fortuna.ical4j.model.Component.newFactory.

Returns a new component factory used to create deep copies.

Returns:ComponentFactory<VEvent>

a component factory instance

Annotations

@Override

setComponentList	back to summary
public void setComponentList(ComponentList<Component> components) Implements net.fortuna.ical4j.model.ComponentContainer.setComponentList. Annotations @Override

setComponentList

back to summary

public void setComponentList(ComponentList<Component> components)

Implements net.fortuna.ical4j.model.ComponentContainer.setComponentList.

Annotations

@Override

validate	back to summary
public ValidationResult validate(final boolean recurse) throws ValidationException Implements abstract net.fortuna.ical4j.model.Component.validate. Doc from net.fortuna.ical4j.model.Component.validate. Perform validation on a component. Parameters recurse:boolean indicates whether to validate the component's properties Annotations @Override Exceptions ValidationException: where the component is not in a valid state

validate

back to summary

public ValidationResult validate(final boolean recurse) throws ValidationException

Implements abstract net.fortuna.ical4j.model.Component.validate.

Doc from net.fortuna.ical4j.model.Component.validate.

Perform validation on a component.

Parameters

recurse:boolean: indicates whether to validate the component's properties

Annotations

@Override

Exceptions

ValidationException:: where the component is not in a valid state

validate	back to summary
public ValidationResult validate(Method method) throws ValidationException Overrides net.fortuna.ical4j.model.component.CalendarComponent.validate. Performs method-specific ITIP validation. Parameters method:Method the applicable method Exceptions ValidationException: where the component does not comply with RFC2446

validate

back to summary

public ValidationResult validate(Method method) throws ValidationException

Overrides net.fortuna.ical4j.model.component.CalendarComponent.validate.

Performs method-specific ITIP validation.

Parameters

method:Method: the applicable method

Exceptions

ValidationException:: where the component does not comply with RFC2446

public Class VEvent

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Class VEvent.Factory

Constructor Summary

Method Summary

Constructor Detail

Method Detail

Modifier and Type	Method and Description
public VEvent	createComponent() Implements net.fortuna.ical4j.model.ComponentFactory.createComponent.
public VEvent	createComponent(PropertyList properties) Implements net.fortuna.ical4j.model.ComponentFactory.createComponent.
public VEvent	createComponent(PropertyList properties, ComponentList<?> subComponents) Overrides default net.fortuna.ical4j.model.ComponentFactory.createComponent.