LineEvent.Type (Java Platform SE 8 )
Keywords: javax.sound.sampled.LineEvent.Type class
Date: 2026-04-24

javax.sound.sampled

## Class LineEvent.Type

- java.lang.Object
- - javax.sound.sampled.LineEvent.Type

- Enclosing class:
    LineEvent

      public static class LineEvent.Type
      extends Object

  The LineEvent.Type inner class identifies what kind of event occurred on a line. Static instances are provided for the common types (OPEN, CLOSE, START, and STOP).
  See Also:
    `LineEvent.getType()`

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static LineEvent.Type` | `CLOSE` A type of event that is sent when a line closes, freeing the system resources it had obtained when it was opened.
    `static LineEvent.Type` | `OPEN` A type of event that is sent when a line opens, reserving system resources for itself.
    `static LineEvent.Type` | `START` A type of event that is sent when a line begins to engage in active input or output of audio data in response to a `start` request.
    `static LineEvent.Type` | `STOP` A type of event that is sent when a line ceases active input or output of audio data in response to a `stop` request, or because the end of media has been reached.

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `Type(String name)` Constructs a new event type.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `equals(Object obj)` Indicates whether the specified object is equal to this event type, returning `true` if the objects are identical.
    `int` | `hashCode()` Finalizes the hashcode method.
    `String` | `toString()` Returns the type name as the string representation.

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Field Detail

    - #### OPEN

          public static final LineEvent.Type OPEN

      A type of event that is sent when a line opens, reserving system resources for itself.
      See Also:
        `CLOSE`, `Line.open()`

    - #### CLOSE

          public static final LineEvent.Type CLOSE

      A type of event that is sent when a line closes, freeing the system resources it had obtained when it was opened.
      See Also:
        `OPEN`, `Line.close()`

    - #### START

          public static final LineEvent.Type START

      A type of event that is sent when a line begins to engage in active input or output of audio data in response to a `start` request.
      See Also:
        `STOP`, `DataLine.start()`

    - #### STOP

          public static final LineEvent.Type STOP

      A type of event that is sent when a line ceases active input or output of audio data in response to a `stop` request, or because the end of media has been reached.
      See Also:
        `START`, `DataLine.stop()`

  - ### Constructor Detail

    - #### Type

          protected Type(String name)

      Constructs a new event type.
      Parameters:
        `name` - name of the type

  - ### Method Detail

    - #### equals

          public final boolean equals(Object obj)

      Indicates whether the specified object is equal to this event type, returning `true` if the objects are identical.
      Overrides:
        `equals` in class `Object`
      Parameters:
        `obj` - the reference object with which to compare
      Returns:
        `true` if this event type is the same as `obj`; `false` otherwise
      See Also:
        `Object.hashCode()`, `HashMap`

    - #### hashCode

          public final int hashCode()

      Finalizes the hashcode method.
      Overrides:
        `hashCode` in class `Object`
      Returns:
        a hash code value for this object.
      See Also:
        `Object.equals(java.lang.Object)`, `System.identityHashCode(java.lang.Object)`

    - #### toString

          public String toString()

      Returns the type name as the string representation.
      Overrides:
        `toString` in class `Object`
      Returns:
        a string representation of the object.

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