java.lang.Object
java.util.EventObject
javax.sound.sampled.LineEvent
- All Implemented Interfaces:
- Serializable
The 
LineEvent class encapsulates information that a line sends its
 listeners whenever the line opens, closes, starts, or stops. Each of these
 four state changes is represented by a corresponding type of event. A
 listener receives the event as a parameter to its
 update method. By querying the event, the
 listener can learn the type of event, the line responsible for the event, and
 how much data the line had processed when the event occurred.
 
 Although this class implements Serializable, attempts to serialize a
 LineEvent object will fail.
- Since:
- 1.3
- See Also:
- 
Nested Class SummaryNested ClassesModifier and TypeClassDescriptionstatic classThe LineEvent.Type inner class identifies what kind of event occurred on a line.
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Field SummaryFields declared in class java.util.EventObjectsource
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Constructor SummaryConstructorsConstructorDescriptionLineEvent(Line line, LineEvent.Type type, long position) Constructs a new event of the specified type, originating from the specified line.
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Method SummaryModifier and TypeMethodDescriptionfinal longObtains the position in the line's audio data when the event occurred, expressed in sample frames.final LinegetLine()Obtains the audio line that is the source of this event.final LineEvent.TypegetType()Obtains the event's type.toString()Returns a string representation of the event.Methods declared in class java.util.EventObjectgetSource
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Constructor Details- 
LineEventConstructs a new event of the specified type, originating from the specified line.- Parameters:
- line- the source of this event
- type- the event type (- OPEN,- CLOSE,- START, or- STOP)
- position- the number of sample frames that the line had already processed when the event occurred, or- AudioSystem.NOT_SPECIFIED
- Throws:
- IllegalArgumentException- if- lineis- null
 
 
- 
- 
Method Details- 
getLineObtains the audio line that is the source of this event.- Returns:
- the line responsible for this event
 
- 
getTypeObtains the event's type.- Returns:
- this event's type (LineEvent.Type.OPEN,LineEvent.Type.CLOSE,LineEvent.Type.START, orLineEvent.Type.STOP)
 
- 
getFramePositionpublic final long getFramePosition()Obtains the position in the line's audio data when the event occurred, expressed in sample frames. For example, if a source line had already played back 14 sample frames at the time it was paused, the pause event would report the line's position as 14. The next frame to be processed would be frame number 14 using zero-based numbering, or 15 using one-based numbering.Note that this field is relevant only to certain events generated by data lines, such as STARTandSTOP. For events generated by lines that do not count sample frames, and for any other events for which this value is not known, the position value should beAudioSystem.NOT_SPECIFIED.- Returns:
- the line's position as a sample frame number
 
- 
toStringReturns a string representation of the event.- Overrides:
- toStringin class- EventObject
- Returns:
- a string representation of the event
 
 
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