Module java.desktop

Package javax.sound.midi.spi

Class MidiDeviceProvider

java.lang.Object

javax.sound.midi.spi.MidiDeviceProvider

public abstract class MidiDeviceProvider
extends Object

A MidiDeviceProvider is a factory or provider for a particular type of MIDI device. This mechanism allows the implementation to determine how resources are managed in the creation and management of a device.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MidiDeviceProvider()	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
abstract MidiDevice	getDevice(MidiDevice.Info info)	Obtains an instance of the device represented by the info object.
abstract MidiDevice.Info[]	getDeviceInfo()	Obtains the set of info objects representing the device or devices provided by this MidiDeviceProvider.
boolean	isDeviceSupported(MidiDevice.Info info)	Indicates whether the device provider supports the device represented by the specified device info object.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MidiDeviceProvider

protected MidiDeviceProvider()

Constructor for subclasses to call.

Method Details

isDeviceSupported

public boolean isDeviceSupported(MidiDevice.Info info)

Indicates whether the device provider supports the device represented by the specified device info object.

Parameters:

info - an info object that describes the device for which support is queried

Returns:

true if the specified device is supported, otherwise false

Throws:

NullPointerException - if info is null

getDeviceInfo

public abstract MidiDevice.Info[] getDeviceInfo()

Obtains the set of info objects representing the device or devices provided by this MidiDeviceProvider.

Returns:

set of device info objects

getDevice

public abstract MidiDevice getDevice(MidiDevice.Info info)

Obtains an instance of the device represented by the info object.

Parameters:

info - an info object that describes the desired device

Returns:

device instance

Throws:

IllegalArgumentException - if the info object specified does not match the info object for a device supported by this MidiDeviceProvider

NullPointerException - if info is null