ShortMessage (Java Platform SE 7 )

java.lang.Object
- javax.sound.midi.MidiMessage
- - javax.sound.midi.ShortMessage

All Implemented Interfaces:

Cloneable
```
public class ShortMessage
extends MidiMessage
```
A ShortMessage contains a MIDI message that has at most two data bytes following its status byte. The types of MIDI message that satisfy this criterion are channel voice, channel mode, system common, and system real-time--in other words, everything except system exclusive and meta-events. The ShortMessage class provides methods for getting and setting the contents of the MIDI message.
A number of ShortMessage methods have integer parameters by which you specify a MIDI status or data byte. If you know the numeric value, you can express it directly. For system common and system real-time messages, you can often use the corresponding fields of ShortMessage, such as SYSTEM_RESET. For channel messages, the upper four bits of the status byte are specified by a command value and the lower four bits are specified by a MIDI channel number. To convert incoming MIDI data bytes that are in the form of Java's signed bytes, you can use the conversion code given in the MidiMessage class description.

See Also:
SysexMessage, MetaMessage

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ACTIVE_SENSING` Status byte for Active Sensing message (0xFE, or 254).
`static int`	`CHANNEL_PRESSURE` Command value for Channel Pressure (Aftertouch) message (0xD0, or 208)
`static int`	`CONTINUE` Status byte for Continue message (0xFB, or 251).
`static int`	`CONTROL_CHANGE` Command value for Control Change message (0xB0, or 176)
`static int`	`END_OF_EXCLUSIVE` Status byte for End of System Exclusive message (0xF7, or 247).
`static int`	`MIDI_TIME_CODE` Status byte for MIDI Time Code Quarter Frame message (0xF1, or 241).
`static int`	`NOTE_OFF` Command value for Note Off message (0x80, or 128)
`static int`	`NOTE_ON` Command value for Note On message (0x90, or 144)
`static int`	`PITCH_BEND` Command value for Pitch Bend message (0xE0, or 224)
`static int`	`POLY_PRESSURE` Command value for Polyphonic Key Pressure (Aftertouch) message (0xA0, or 160)
`static int`	`PROGRAM_CHANGE` Command value for Program Change message (0xC0, or 192)
`static int`	`SONG_POSITION_POINTER` Status byte for Song Position Pointer message (0xF2, or 242).
`static int`	`SONG_SELECT` Status byte for MIDI Song Select message (0xF3, or 243).
`static int`	`START` Status byte for Start message (0xFA, or 250).
`static int`	`STOP` Status byte for Stop message (0xFC, or 252).
`static int`	`SYSTEM_RESET` Status byte for System Reset message (0xFF, or 255).
`static int`	`TIMING_CLOCK` Status byte for Timing Clock messagem (0xF8, or 248).
`static int`	`TUNE_REQUEST` Status byte for Tune Request message (0xF6, or 246).

Fields inherited from class javax.sound.midi.MidiMessage
data, length

Constructor Summary

Constructors
Modifier	Constructor and Description
	`ShortMessage()` Constructs a new `ShortMessage`.
`protected`	`ShortMessage(byte[] data)` Constructs a new `ShortMessage`.
	`ShortMessage(int status)` Constructs a new `ShortMessage` which represents a MIDI message that takes no data bytes.
	`ShortMessage(int status, int data1, int data2)` Constructs a new `ShortMessage` which represents a MIDI message that takes up to two data bytes.
	`ShortMessage(int command, int channel, int data1, int data2)` Constructs a new `ShortMessage` which represents a channel MIDI message that takes up to two data bytes.

Method Summary

Methods
Modifier and Type	Method and Description
`Object`	`clone()` Creates a new object of the same class and with the same contents as this object.
`int`	`getChannel()` Obtains the MIDI channel associated with this event.
`int`	`getCommand()` Obtains the MIDI command associated with this event.
`int`	`getData1()` Obtains the first data byte in the message.
`int`	`getData2()` Obtains the second data byte in the message.
`protected int`	`getDataLength(int status)` Retrieves the number of data bytes associated with a particular status byte value.
`void`	`setMessage(int status)` Sets the parameters for a MIDI message that takes no data bytes.
`void`	`setMessage(int status, int data1, int data2)` Sets the parameters for a MIDI message that takes one or two data bytes.
`void`	`setMessage(int command, int channel, int data1, int data2)` Sets the short message parameters for a channel message which takes up to two data bytes.

Methods inherited from class javax.sound.midi.MidiMessage
getLength, getMessage, getStatus, setMessage

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MIDI_TIME_CODE
```
public static final int MIDI_TIME_CODE
```
    Status byte for MIDI Time Code Quarter Frame message (0xF1, or 241).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - SONG_POSITION_POINTER
```
public static final int SONG_POSITION_POINTER
```
    Status byte for Song Position Pointer message (0xF2, or 242).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - SONG_SELECT
```
public static final int SONG_SELECT
```
    Status byte for MIDI Song Select message (0xF3, or 243).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - TUNE_REQUEST
```
public static final int TUNE_REQUEST
```
    Status byte for Tune Request message (0xF6, or 246).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - END_OF_EXCLUSIVE
```
public static final int END_OF_EXCLUSIVE
```
    Status byte for End of System Exclusive message (0xF7, or 247).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - TIMING_CLOCK
```
public static final int TIMING_CLOCK
```
    Status byte for Timing Clock messagem (0xF8, or 248).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - START
```
public static final int START
```
    Status byte for Start message (0xFA, or 250).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - CONTINUE
```
public static final int CONTINUE
```
    Status byte for Continue message (0xFB, or 251).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - STOP
```
public static final int STOP
```
    Status byte for Stop message (0xFC, or 252).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - ACTIVE_SENSING
```
public static final int ACTIVE_SENSING
```
    Status byte for Active Sensing message (0xFE, or 254).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - SYSTEM_RESET
```
public static final int SYSTEM_RESET
```
    Status byte for System Reset message (0xFF, or 255).
    
    See Also:
    MidiMessage.getStatus(), Constant Field Values
  - NOTE_OFF
```
public static final int NOTE_OFF
```
    Command value for Note Off message (0x80, or 128)
    
    See Also:
    Constant Field Values
  - NOTE_ON
```
public static final int NOTE_ON
```
    Command value for Note On message (0x90, or 144)
    
    See Also:
    Constant Field Values
  - POLY_PRESSURE
```
public static final int POLY_PRESSURE
```
    Command value for Polyphonic Key Pressure (Aftertouch) message (0xA0, or 160)
    
    See Also:
    Constant Field Values
  - CONTROL_CHANGE
```
public static final int CONTROL_CHANGE
```
    Command value for Control Change message (0xB0, or 176)
    
    See Also:
    Constant Field Values
  - PROGRAM_CHANGE
```
public static final int PROGRAM_CHANGE
```
    Command value for Program Change message (0xC0, or 192)
    
    See Also:
    Constant Field Values
  - CHANNEL_PRESSURE
```
public static final int CHANNEL_PRESSURE
```
    Command value for Channel Pressure (Aftertouch) message (0xD0, or 208)
    
    See Also:
    Constant Field Values
  - PITCH_BEND
```
public static final int PITCH_BEND
```
    Command value for Pitch Bend message (0xE0, or 224)
    
    See Also:
    Constant Field Values
- Constructor Detail
  - ShortMessage
```
public ShortMessage()
```
    Constructs a new ShortMessage. The contents of the new message are guaranteed to specify a valid MIDI message. Subsequently, you may set the contents of the message using one of the setMessage methods.
    
    See Also:
    setMessage(int)
  - ShortMessage
```
public ShortMessage(int status)
             throws InvalidMidiDataException
```
    Constructs a new ShortMessage which represents a MIDI message that takes no data bytes. The contents of the message can be changed by using one of the setMessage methods.
    
    Parameters:
    status - the MIDI status byte
    
    Throws:
    
    InvalidMidiDataException - if status does not specify a valid MIDI status byte for a message that requires no data bytes
    Since:
    
    1.7
    
    See Also:
    setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), MidiMessage.getStatus()
  - ShortMessage
```
public ShortMessage(int status,
            int data1,
            int data2)
             throws InvalidMidiDataException
```
    Constructs a new ShortMessage which represents a MIDI message that takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored. If the message does not take any data bytes, both data bytes are ignored. The contents of the message can be changed by using one of the setMessage methods.
    
    Parameters:
    status - the MIDI status byte
    data1 - the first data byte
    data2 - the second data byte
    
    Throws:
    
    InvalidMidiDataException - if the status byte or all data bytes belonging to the message do not specify a valid MIDI message
    Since:
    
    1.7
    
    See Also:
    setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), MidiMessage.getStatus(), getData1(), getData2()
  - ShortMessage
```
public ShortMessage(int command,
            int channel,
            int data1,
            int data2)
             throws InvalidMidiDataException
```
    Constructs a new ShortMessage which represents a channel MIDI message that takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored. If the message does not take any data bytes, both data bytes are ignored. The contents of the message can be changed by using one of the setMessage methods.
    
    Parameters:
    command - the MIDI command represented by this message
    channel - the channel associated with the message
    data1 - the first data byte
    data2 - the second data byte
    
    Throws:
    
    InvalidMidiDataException - if the command value, channel value or all data bytes belonging to the message do not specify a valid MIDI message
    Since:
    
    1.7
    
    See Also:
    setMessage(int), setMessage(int, int, int), setMessage(int, int, int, int), getCommand(), getChannel(), getData1(), getData2()
  - ShortMessage
```
protected ShortMessage(byte[] data)
```
    Constructs a new ShortMessage.
    
    Parameters:
    data - an array of bytes containing the complete message. The message data may be changed using the setMessage method.
    See Also:
    setMessage(int)
- Method Detail
  - setMessage
```
public void setMessage(int status)
                throws InvalidMidiDataException
```
    Sets the parameters for a MIDI message that takes no data bytes.
    
    Parameters:
    status - the MIDI status byte
    
    Throws:
    
    InvalidMidiDataException - if status does not specify a valid MIDI status byte for a message that requires no data bytes.
    
    InvalidMidiDataException
    See Also:
    setMessage(int, int, int), setMessage(int, int, int, int)
  - setMessage
```
public void setMessage(int status,
              int data1,
              int data2)
                throws InvalidMidiDataException
```
    Sets the parameters for a MIDI message that takes one or two data bytes. If the message takes only one data byte, the second data byte is ignored; if the message does not take any data bytes, both data bytes are ignored.
    
    Parameters:
    status - the MIDI status byte
    data1 - the first data byte
    data2 - the second data byte
    
    Throws:
    
    InvalidMidiDataException - if the the status byte, or all data bytes belonging to the message, do not specify a valid MIDI message.
    
    InvalidMidiDataException
    See Also:
    setMessage(int, int, int, int), setMessage(int)
  - setMessage
```
public void setMessage(int command,
              int channel,
              int data1,
              int data2)
                throws InvalidMidiDataException
```
    Sets the short message parameters for a channel message which takes up to two data bytes. If the message only takes one data byte, the second data byte is ignored; if the message does not take any data bytes, both data bytes are ignored.
    
    Parameters:
    command - the MIDI command represented by this message
    channel - the channel associated with the message
    data1 - the first data byte
    data2 - the second data byte
    
    Throws:
    
    InvalidMidiDataException - if the status byte or all data bytes belonging to the message, do not specify a valid MIDI message
    
    InvalidMidiDataException
    See Also:
    setMessage(int, int, int), setMessage(int), getCommand(), getChannel(), getData1(), getData2()
  - getChannel
```
public int getChannel()
```
    Obtains the MIDI channel associated with this event. This method assumes that the event is a MIDI channel message; if not, the return value will not be meaningful.
    
    Returns:
    MIDI channel associated with the message.
    See Also:
    setMessage(int, int, int, int)
  - getCommand
```
public int getCommand()
```
    Obtains the MIDI command associated with this event. This method assumes that the event is a MIDI channel message; if not, the return value will not be meaningful.
    
    See Also:
    setMessage(int, int, int, int)
  - getData1
```
public int getData1()
```
    Obtains the first data byte in the message.
    
    Returns:
    the value of the data1 field
    See Also:
    setMessage(int, int, int)
  - getData2
```
public int getData2()
```
    Obtains the second data byte in the message.
    
    Returns:
    the value of the data2 field
    See Also:
    setMessage(int, int, int)
  - clone
```
public Object clone()
```
    Creates a new object of the same class and with the same contents as this object.
    
    Specified by:
    
    clone in class MidiMessage
    
    Returns:
    a clone of this instance.
    See Also:
    Cloneable
  - getDataLength
```
protected final int getDataLength(int status)
                           throws InvalidMidiDataException
```
    Retrieves the number of data bytes associated with a particular status byte value.
    
    Parameters:
    status - status byte value, which must represent a short MIDI message
    
    Returns:
    data length in bytes (0, 1, or 2)
    
    Throws:
    
    InvalidMidiDataException - if the status argument does not represent the status byte for any short message
    
    InvalidMidiDataException

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Class ShortMessage

Field Summary

Fields inherited from class javax.sound.midi.MidiMessage

Constructor Summary

Method Summary

Methods inherited from class javax.sound.midi.MidiMessage

Methods inherited from class java.lang.Object

Field Detail

MIDI_TIME_CODE

SONG_POSITION_POINTER

SONG_SELECT

TUNE_REQUEST

END_OF_EXCLUSIVE

TIMING_CLOCK

START

CONTINUE

STOP

ACTIVE_SENSING

SYSTEM_RESET

NOTE_OFF

NOTE_ON

POLY_PRESSURE

CONTROL_CHANGE

PROGRAM_CHANGE

CHANNEL_PRESSURE

PITCH_BEND

Constructor Detail

ShortMessage

ShortMessage

ShortMessage

ShortMessage

ShortMessage

Method Detail

setMessage

setMessage

setMessage

getChannel

getCommand

getData1

getData2

clone

getDataLength