Key (Vaadin Platform (vaadin-core) 12.0.0.alpha5 API)

All Superinterfaces:

Serializable

All Known Implementing Classes:

KeyModifier

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface Key
extends Serializable
```
An interface to represent keyboard keys.
See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values

Field Summary

Fields
Modifier and Type	Field and Description
`static Key`	`ACCEPT` The `Accept`, `Commit`, or `OK` key or button.
`static Key`	`ADD` The numeric keypad's addition key, `+`.
`static Key`	`AGAIN` The `Again` key.
`static Key`	`ALL_CANDIDATES` The `All Candidates` key, which starts multi-candidate mode, in which multiple candidates are displayed for the ongoing input.
`static Key`	`ALPHANUMERIC` The `Alphanumeric` key.
`static Key`	`ALT` The `Alt` (Alternative) key.
`static Key`	`ALT_GRAPH` The `AltGr` or `AltGraph` (Alternate Graphics) key.
`static Key`	`APP_SWITCH` Presents a list of recently-used applications which lets the user change apps quickly.
`static Key`	`ARROW_DOWN` The down arrow key.
`static Key`	`ARROW_LEFT` The left arrow key.
`static Key`	`ARROW_RIGHT` The right arrow key.
`static Key`	`ARROW_UP` The up arrow key.
`static Key`	`ATTN` The `Attn` (Attention) key.
`static Key`	`AUDIO_BALANCE_LEFT` Adjusts audio balance toward the left.
`static Key`	`AUDIO_BALANCE_RIGHT` Adjusts audio balance toward the right.
`static Key`	`AUDIO_BASS_BOOST_DOWN` Reduces bass boosting or cycles downward through bass boost modes or states.
`static Key`	`AUDIO_BASS_BOOST_TOGGLE` Toggles bass boosting on and off.
`static Key`	`AUDIO_BASS_BOOST_UP` Increases the amount of bass boosting, or cycles upward through a set of bass boost modes or states.
`static Key`	`AUDIO_BASS_DOWN` Decreases the amount of bass.
`static Key`	`AUDIO_BASS_UP` Increases the amount of bass.
`static Key`	`AUDIO_FADER_FRONT` Adjusts the audio fader toward the front.
`static Key`	`AUDIO_FADER_REAR` Adjusts the audio fader toward the rear.
`static Key`	`AUDIO_SURROUND_MODE_NEXT` Selects the next available surround sound mode.
`static Key`	`AUDIO_TREBLE_DOWN` Decreases the amount of treble.
`static Key`	`AUDIO_TREBLE_UP` Increases the amount of treble.
`static Key`	`AUDIO_VOLUME_DOWN` Decreases the audio volume.
`static Key`	`AUDIO_VOLUME_MUTE` Mutes the audio.
`static Key`	`AUDIO_VOLUME_UP` Increases the audio volume.
`static Key`	`AVR_INPUT` Changes the input mode on an external audio/video receiver (AVR) unit.
`static Key`	`AVR_POWER` Toggles the power on an external AVR unit.
`static Key`	`BACKSPACE` The `Backspace` key.
`static Key`	`BRIGHTNESS_DOWN` The Brightness Down key.
`static Key`	`BRIGHTNESS_UP` The Brightness Up key.
`static Key`	`BROWSER_BACK` Navigates to the previous content or page in the current Web view's history.
`static Key`	`BROWSER_FAVORITES` Opens the user's list of bookmarks/favorites.
`static Key`	`BROWSER_FORWARD` Navigates to the next content or page in the current Web view's history.
`static Key`	`BROWSER_HOME` Navigates to the user's preferred home page.
`static Key`	`BROWSER_REFRESH` Refreshes the current page or content.
`static Key`	`BROWSER_SEARCH` Activates the user's preferred search engine or the search interface within their browser.
`static Key`	`BROWSER_STOP` Stops loading the currently displayed Web view or content.
`static Key`	`CALL` The `Call` key; dials the number which has been entered.
`static Key`	`CAMERA` The `Camera` key; activates the camera.
`static Key`	`CAMERA_FOCUS` The `Focus` key; focuses the camera.
`static Key`	`CANCEL` The `Cancel` key.
`static Key`	`CAPS_LOCK` The `Caps Lock` key.
`static Key`	`CHANNEL_DOWN` Switches to the previous channel.
`static Key`	`CHANNEL_UP` Switches to the next channel.
`static Key`	`CLEAR` The `Clear` key.
`static Key`	`CLOSE` Closes the current document or message.
`static Key`	`CLOSED_CAPTION_TOGGLE` Toggles closed captioning on and off.
`static Key`	`CODE_INPUT` The `Code Input` key, which enables code input mode, which lets the user enter characters by typing their code points (their Unicode character numbers, typically).
`static Key`	`COLOR_F0_RED` General-purpose media function key, color-coded red; this has index 0 among the colored keys.
`static Key`	`COLOR_F1_GREEN` General-purpose media function key, color-coded green; this has index 1 among the colored keys.
`static Key`	`COLOR_F2_YELLOW` General-purpose media function key, color-coded yellow; this has index 2 among the colored keys.
`static Key`	`COLOR_F3_BLUE` General-purpose media function key, color-coded blue; this has index 3 among the colored keys.
`static Key`	`COLOR_F4_GREY` General-purpose media function key, color-coded grey; this has index 4 among the colored keys.
`static Key`	`COLOR_F5_BROWN` General-purpose media function key, color-coded brown; this has index 5 among the colored keys.
`static Key`	`COMPOSE` The `Compose` key.
`static Key`	`CONTEXT_MENU` Shows the context menu.
`static Key`	`CONTROL` The `Control`, `Ctrl`, or `Ctl` key.
`static Key`	`CONVERT` The `Convert` key, which instructs the IME to convert the current input method sequence into the resulting character.
`static Key`	`COPY` The `Copy` key (on certain extended keyboards).
`static Key`	`CR_SEL` The Cursor Select key, `CrSel`.
`static Key`	`CUT` The `Cut` key (on certain extended keyboards).
`static Key`	`DEAD` A dead "combining" key; that is, a key which is used in tandem with other keys to generate accented and other modified characters.
`static Key`	`DECIMAL` The decimal point key (typically `.` or `,`) depending on the region.
`static Key`	`DELETE` The Delete key, `Del`.
`static Key`	`DIMMER` Adjusts the brightness of the device by toggling between two brightness levels or by cycling among multiple brightness levels.
`static Key`	`DISPLAY_SWAP` Cycles among video sources.
`static Key`	`DIVIDE` The numeric keypad's division key, /.
`static Key`	`DVR` Switches the input source to the Digital Video Recorder (DVR).
`static Key`	`EISU` The `Eisu` key.
`static Key`	`EJECT` The `Eject` key.
`static Key`	`END` The `End` key.
`static Key`	`END_CALL` The `End Call` or `Hang Up` button.
`static Key`	`ENTER` The `Enter` or `?` key (sometimes labeled `Return`).
`static Key`	`ERASE_EOF` Erase to End of Field.
`static Key`	`ESCAPE` The `Esc` (Escape) key.
`static Key`	`EX_SEL` The `ExSel` (Extend Selection) key.
`static Key`	`EXECUTE` The `Execute` key.
`static Key`	`EXIT` The Exit button, which exits the current application or menu.
`static Key`	`F1` The first general-purpose function key, `F1`.
`static Key`	`F10` The `F10` key.
`static Key`	`F11` The `F11` key.
`static Key`	`F12` The `F12` key.
`static Key`	`F13` The `F13` key.
`static Key`	`F14` The `F14` key.
`static Key`	`F15` The `F15` key.
`static Key`	`F16` The `F16` key.
`static Key`	`F17` The `F17` key.
`static Key`	`F18` The `F18` key.
`static Key`	`F19` The `F19` key.
`static Key`	`F2` The `F2` key.
`static Key`	`F20` The `F20` key.
`static Key`	`F3` The `F3` key.
`static Key`	`F4` The `F4` key.
`static Key`	`F5` The `F5` key.
`static Key`	`F6` The `F6` key.
`static Key`	`F7` The `F7` key.
`static Key`	`F8` The `F8` key.
`static Key`	`F9` The `F9` key.
`static Key`	`FAVORITE_CLEAR0` Clears the program or content stored in the first favorites list slot.
`static Key`	`FAVORITE_CLEAR1` Clears the program or content stored in the second favorites list slot.
`static Key`	`FAVORITE_CLEAR2` Clears the program or content stored in the third favorites list slot.
`static Key`	`FAVORITE_CLEAR3` Clears the program or content stored in the fourth favorites list slot.
`static Key`	`FAVORITE_RECALL0` Selects (recalls) the program or content stored in the first favorites list slot.
`static Key`	`FAVORITE_RECALL1` Selects (recalls) the program or content stored in the second favorites list slot.
`static Key`	`FAVORITE_RECALL2` Selects (recalls) the program or content stored in the third favorites list slot.
`static Key`	`FAVORITE_RECALL3` Selects (recalls) the program or content stored in the fourth favorites list slot.
`static Key`	`FAVORITE_STORE0` Stores the current program or content into the first favorites list slot.
`static Key`	`FAVORITE_STORE1` Stores the current program or content into the second favorites list slot.
`static Key`	`FAVORITE_STORE2` Stores the current program or content into the third favorites list slot.
`static Key`	`FAVORITE_STORE3` Stores the current program or content into the fourth favorites list slot.
`static Key`	`FINAL_MODE` The `Final` (Final Mode) key is used on some Asian keyboards to enter final mode when using IMEs.
`static Key`	`FIND` The `Find` key.
`static Key`	`FINISH` The `Finish` key.
`static Key`	`FN` The `Fn` (Function modifier) key.
`static Key`	`FN_LOCK` The `FnLock` or `F-Lock` (Function Lock) key.
`static Key`	`GO_BACK` The `Back` button.
`static Key`	`GO_HOME` The `Home` button, which takes the user to the phone's main screen (usually an application launcher).
`static Key`	`GROUP_FIRST` Switches to the first character group on an ISO/IEC 9995 keyboard.
`static Key`	`GROUP_LAST` Switches to the last character group on an ISO/IEC 9995 keyboard.
`static Key`	`GROUP_NEXT` Switches to the next character group on an ISO/IEC 9995 keyboard.
`static Key`	`GROUP_PREVIOUS` Switches to the previous character group on an ISO/IEC 9995 keyboard.
`static Key`	`GUIDE` Toggles the display of the program or content guide.
`static Key`	`GUIDE_NEXT_DAY` If the guide is currently displayed, this button tells the guide to display the next day's content.
`static Key`	`GUIDE_PREVIOUS_DAY` If the guide is currently displayed, this button tells the guide to display the previous day's content.
`static Key`	`HANGUL_MODE` The `Hangul` (Korean character set) mode key, which toggles between Hangul and English entry modes.
`static Key`	`HANJA_MODE` Selects the Hanja mode, for converting Hangul characters to the more specific Hanja characters.
`static Key`	`HANKAKU` The `Hankaku` (half-width characters) key.
`static Key`	`HEADSET_HOOK` The `Headset Hook` key.
`static Key`	`HELP` The `Help` key.
`static Key`	`HIBERNATE` The `Hibernate` key.
`static Key`	`HIRAGANA` The `Hiragana` key; selects Kana characters mode.
`static Key`	`HIRAGANA_KATAKANA` Toggles between the Hiragana and Katakana writing systems.
`static Key`	`HOME` The `Home` key.
`static Key`	`HYPER` The `Hyper` key.
`static Key`	`INFO` Toggles the display of information about the currently selected content, program, or media.
`static Key`	`INSERT` The Insert key, `Ins`.
`static Key`	`INSTANT_REPLAY` Tells the device to perform an instant replay (typically some form of jumping back a short amount of time then playing it again, possibly but not usually in slow motion).
`static Key`	`JUNJA_MODE` Selects the Junja mode, in which Korean is represented using single-byte Latin characters.
`static Key`	`KANA_MODE` The `Kana Mode` (Kana Lock) key.
`static Key`	`KANJI_MODE` The `Kanji Mode` key.
`static Key`	`KATAKANA` The `Katakana` key.
`static Key`	`KEY11` The `11` key found on certain media numeric keypads.
`static Key`	`KEY12` The `12` key found on certain media numeric keypads.
`static Key`	`LAST_NUMBER_REDIAL` The `Redial` button, which redials the last-called number.
`static Key`	`LAUNCH_APPLICATION1` The first generic application launcher button.
`static Key`	`LAUNCH_APPLICATION10` The 10th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION11` The 11th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION12` The 12th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION13` The 13th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION14` The 14th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION15` The 15th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION16` The 16th generic application launcher button.
`static Key`	`LAUNCH_APPLICATION2` The second generic application launcher button.
`static Key`	`LAUNCH_APPLICATION3` The third generic application launcher button.
`static Key`	`LAUNCH_APPLICATION4` The fourth generic application launcher button.
`static Key`	`LAUNCH_APPLICATION5` The fifth generic application launcher button.
`static Key`	`LAUNCH_APPLICATION6` The sixth generic application launcher button.
`static Key`	`LAUNCH_APPLICATION7` The seventh generic application launcher button.
`static Key`	`LAUNCH_APPLICATION8` The eighth generic application launcher button.
`static Key`	`LAUNCH_APPLICATION9` The ninth generic application launcher button.
`static Key`	`LAUNCH_CALCULATOR` The `Calculator` key.
`static Key`	`LAUNCH_CALENDAR` The `Calendar` key.
`static Key`	`LAUNCH_CONTACTS` The `Contacts` key.
`static Key`	`LAUNCH_MAIL` The `Mail` key.
`static Key`	`LAUNCH_MEDIA_PLAYER` The `Media Player` key.
`static Key`	`LAUNCH_MUSIC_PLAYER` The `Music Player` key.
`static Key`	`LAUNCH_MY_COMPUTER` The `My Computer` key on Windows keyboards.
`static Key`	`LAUNCH_PHONE` The `Phone` key, to open the phone dialer application if one is present.
`static Key`	`LAUNCH_SCREEN_SAVER` The `Screen Saver` key.
`static Key`	`LAUNCH_SPREADSHEET` The `Spreadsheet` key.
`static Key`	`LAUNCH_WEB_BROWSER` The `Web Browser` key.
`static Key`	`LAUNCH_WEB_CAM` The `WebCam` key.
`static Key`	`LAUNCH_WORD_PROCESSOR` The `Word Processor` key.
`static Key`	`LINK` Opens content linked to the current program, if available and possible.
`static Key`	`LIST_PROGRAM` Lists the current program.
`static Key`	`LIVE_CONTENT` Toggles a display listing currently available live content or programs.
`static Key`	`LOCK` Locks or unlocks the currently selected content or program.
`static Key`	`LOG_OFF` The `LogOff` key.
`static Key`	`MAIL_FORWARD` Opens the user interface to forward a message.
`static Key`	`MAIL_REPLY` Opens the user interface to reply to a message.
`static Key`	`MAIL_SEND` Sends the current message.
`static Key`	`MANNER_MODE` A button which cycles among the notification modes: silent, vibrate, ring, and so forth.
`static Key`	`MEDIA_APPS` Presents a list of media applications, such as photo viewers, audio and video players, and games.
`static Key`	`MEDIA_AUDIO_TRACK` The Audio Track key.
`static Key`	`MEDIA_FAST_FORWARD` Starts, continues, or increases the speed of fast forwarding the media.
`static Key`	`MEDIA_LAST` Jumps back to the last-viewed content, program, or other media.
`static Key`	`MEDIA_PAUSE` Pauses the currently playing media.
`static Key`	`MEDIA_PLAY` Starts or continues playing media at normal speed, if not already doing so.
`static Key`	`MEDIA_PLAY_PAUSE` Toggles between playing and pausing the current media.
`static Key`	`MEDIA_RECORD` Starts or resumes recording media.
`static Key`	`MEDIA_REWIND` Starts, continues, or increases the speed of rewinding the media.
`static Key`	`MEDIA_SKIP_BACKWARD` Skips backward to the previous content or program.
`static Key`	`MEDIA_SKIP_FORWARD` Skips forward to the next content or program.
`static Key`	`MEDIA_STEP_BACKWARD` Steps backward to the previous content or program.
`static Key`	`MEDIA_STEP_FORWARD` Steps forward to the next content or program.
`static Key`	`MEDIA_STOP` Stops the current media activity (such as playing, recording, pausing, forwarding, or rewinding).
`static Key`	`MEDIA_TOP_MENU` Top Menu button; opens the media's main menu, such as on a DVD or Blu-Ray disc.
`static Key`	`MEDIA_TRACK_NEXT` Seeks to the next media or program track.
`static Key`	`MEDIA_TRACK_PREVIOUS` Seeks to the previous media or program track.
`static Key`	`META` The `Meta` key.
`static Key`	`MICROPHONE_TOGGLE` Toggles the microphone on and off.
`static Key`	`MICROPHONE_VOLUME_DOWN` Decreases the microphone's input volume.
`static Key`	`MICROPHONE_VOLUME_MUTE` Mutes the microphone input.
`static Key`	`MICROPHONE_VOLUME_UP` Increases the microphone's input volume.
`static Key`	`MODE_CHANGE` The Mode Change key.
`static Key`	`MULTIPLY` The numeric keypad's multiplication key, `*`.
`static Key`	`NAVIGATE_IN` Navigates into a submenu or option.
`static Key`	`NAVIGATE_NEXT` Navigates to the next item.
`static Key`	`NAVIGATE_OUT` Navigates out of the current screen or menu.
`static Key`	`NAVIGATE_PREVIOUS` Navigates to the previous item.
`static Key`	`NEW` Creates a new document or message.
`static Key`	`NEXT_CANDIDATE` The Next Candidate function key.
`static Key`	`NEXT_FAVORITE_CHANNEL` Cycles to the next channel in the favorites list.
`static Key`	`NEXT_USER_PROFILE` Cycles to the next saved user profile, if this feature is supported and multiple profiles exist.
`static Key`	`NON_CONVERT` The `NonConvert` ("Don't convert") key.
`static Key`	`NOTIFICATION` The `Notification` key.
`static Key`	`NUM_LOCK` The `NumLock` (Number Lock) key.
`static Key`	`ON_DEMAND` Opens the user interface for selecting on demand content or programs to watch.
`static Key`	`OPEN` Opens an existing document or message.
`static Key`	`PAGE_DOWN` The `Page Down` (or `PgDn`) key.
`static Key`	`PAGE_UP` The `Page Up` (or `PgUp`) key.
`static Key`	`PAIRING` Starts the process of pairing the remote with a device to be controlled.
`static Key`	`PASTE` Paste from the clipboard.
`static Key`	`PAUSE` The `Pause` key.
`static Key`	`PINP_DOWN` A button to move the picture-in-picture view downward.
`static Key`	`PINP_MOVE` A button to control moving the picture-in-picture view.
`static Key`	`PINP_TOGGLE` Toggles display of the picture-in-picture view on and off.
`static Key`	`PINP_UP` A button to move the picture-in-picture view upward.
`static Key`	`PLAY` The `Play` key.
`static Key`	`PLAY_SPEED_DOWN` Decreases the media playback rate.
`static Key`	`PLAY_SPEED_RESET` Returns the media playback rate to normal.
`static Key`	`PLAY_SPEED_UP` Increases the media playback rate.
`static Key`	`POWER` The `Power` button or key, to toggle power on and off.
`static Key`	`POWER_OFF` The `PowerOff` or `PowerDown` key.
`static Key`	`PREVIOUS_CANDIDATE` The Previous Candidate key.
`static Key`	`PRINT` Prints the current document or message.
`static Key`	`PRINT_SCREEN` The `PrintScreen` or `PrtScr` key.
`static Key`	`PROCESS` The `Process` key.
`static Key`	`PROPS` The `Props` (Properties) key.
`static Key`	`RANDOM_TOGGLE` Toggles random media (also known as "shuffle mode") on and off.
`static Key`	`RC_LOW_BATTERY` A code sent when the remote control's battery is low.
`static Key`	`RECORD_SPEED_NEXT` Cycles among the available media recording speeds.
`static Key`	`REDO` Redo the last action.
`static Key`	`RF_BYPASS` Toggles radio frequency (RF) input bypass mode on and off.
`static Key`	`ROMAJI` The `Romaji` key; selects the Roman character set.
`static Key`	`SAVE` Saves the current document or message.
`static Key`	`SCAN_CHANNELS_TOGGLE` Toggles the channel scan mode on and off; this is a mode which flips through channels automatically until the user stops the scan.
`static Key`	`SCREEN_MODE_NEXT` Cycles through the available screen display modes.
`static Key`	`SCROLL_LOCK` The `Scroll Lock` key.
`static Key`	`SELECT` The `Select` key.
`static Key`	`SEPARATOR` The numeric keypad's places separator character (in the United States, this is a comma, but elsewhere it is frequently a period).
`static Key`	`SETTINGS` Toggles display of the device's settings screen on and off.
`static Key`	`SHIFT` The `Shift` key.
`static Key`	`SINGLE_CANDIDATE` The Single Candidate key.
`static Key`	`SOFT1` The first general-purpose virtual function key.
`static Key`	`SOFT2` The second general-purpose virtual function key.
`static Key`	`SOFT3` The third general-purpose virtual function key.
`static Key`	`SOFT4` The fourth general-purpose virtual function key.
`static Key`	`SPACE` The space key, `Space Bar`.
`static Key`	`SPEECH_CORRECTION_LIST` Presents a list of possible corrections for a word which was incorrectly identified.
`static Key`	`SPEECH_INPUT_TOGGLE` Toggles between dictation mode and command/control mode.
`static Key`	`SPELL_CHECK` Starts spell checking the current document.
`static Key`	`SPLIT_SCREEN_TOGGLE` Toggles split screen display mode on and off.
`static Key`	`STANDBY` The `Standby` key; also known as `Suspend` or `Sleep`.
`static Key`	`STB_INPUT` Cycles among input modes on an external set-top box (STB).
`static Key`	`STB_POWER` Toggles on and off an external STB.
`static Key`	`SUBTITLE` Toggles the display of subtitles on and off if they're available.
`static Key`	`SUBTRACT` The numeric keypad's subtraction key, -.
`static Key`	`SUPER` The `Super` key.
`static Key`	`SYMBOL` The `Symbol` modifier key (found on certain virtual keyboards).
`static Key`	`SYMBOL_LOCK` The `Symbol Lock` key.
`static Key`	`TAB` The Horizontal Tab key, `Tab`.
`static Key`	`TELETEXT` Toggles display of teletext, if available.
`static Key`	`TV` Switches into TV viewing mode.
`static Key`	`TV_3D_MODE` Toggles 3D TV mode on and off.
`static Key`	`TV_ANTENNA_CABLE` Toggles between antenna and cable inputs.
`static Key`	`TV_AUDIO_DESCRIPTION` Toggles audio description mode on and off.
`static Key`	`TV_AUDIO_DESCRIPTION_MIX_DOWN` Decreases the audio description's mixing volume; reduces the volume of the audio descriptions relative to the program sound.
`static Key`	`TV_AUDIO_DESCRIPTION_MIX_UP` Increases the audio description's mixing volume; increases the volume of the audio descriptions relative to the program sound.
`static Key`	`TV_CONTENTS_MENU` Displays or hides the media contents available for playback (this may be a channel guide showing the currently airing programs, or a list of media files to play).
`static Key`	`TV_DATA_SERVICE` Displays or hides the TV's data service menu.
`static Key`	`TV_INPUT` Cycles the input mode on an external TV.
`static Key`	`TV_INPUT_COMPONENT1` Switches to the input "Component 1."
`static Key`	`TV_INPUT_COMPONENT2` Switches to the input "Component 2."
`static Key`	`TV_INPUT_COMPOSITE1` Switches to the input "Composite 1."
`static Key`	`TV_INPUT_COMPOSITE2` Switches to the input "Composite 2."
`static Key`	`TV_INPUT_HDMI1` Switches to the input "HDMI 1."
`static Key`	`TV_INPUT_HDMI2` Switches to the input "HDMI 2."
`static Key`	`TV_INPUT_HDMI3` Switches to the input "HDMI 3."
`static Key`	`TV_INPUT_HDMI4` Switches to the input "HDMI 4."
`static Key`	`TV_INPUT_VGA1` Switches to the input "VGA 1."
`static Key`	`TV_MEDIA_CONTEXT` The Media Context menu key.
`static Key`	`TV_NETWORK` Toggle the TV's network connection on and off.
`static Key`	`TV_NUMBER_ENTRY` Put the TV into number entry mode.
`static Key`	`TV_POWER` The device's power button.
`static Key`	`TV_RADIO_SERVICE` Radio button.
`static Key`	`TV_SATELLITE` Satellite button.
`static Key`	`TV_SATELLITE_BS` Broadcast Satellite button.
`static Key`	`TV_SATELLITE_CS` Communication Satellite button.
`static Key`	`TV_SATELLITE_TOGGLE` Toggles among available satellites.
`static Key`	`TV_TERRESTRIAL_ANALOG` Selects analog terrestrial television service (analog cable or antenna reception).
`static Key`	`TV_TERRESTRIAL_DIGITAL` Selects digital terrestrial television service (digital cable or antenna reception).
`static Key`	`TV_TIMER` Timer programming button.
`static Key`	`UNDO` Undo the last action.
`static Key`	`UNIDENTIFIED` The user agent wasn't able to map the event's virtual keycode to a specific key value.
`static Key`	`VIDEO_MODE_NEXT` Cycles through the available video modes.
`static Key`	`VOICE_DIAL` The `Voice Dial` key.
`static Key`	`WAKE_UP` The `WakeUp` key; used to wake the computer from the hibernation or standby modes.
`static Key`	`WINK` Causes the device to identify itself in some fashion, such as by flashing a light, briefly changing the brightness of indicator lights, or emitting a tone.
`static Key`	`ZENKAKU` The `Zenkaku` (full width) characters key.
`static Key`	`ZENKAKU_HANAKU` The `Zenkaku/Hankaku` (full width/half width) toggle key.
`static Key`	`ZOOM_IN` The `ZoomIn` key.
`static Key`	`ZOOM_OUT` The `ZoomOut` key.
`static Key`	`ZOOM_TOGGLE` Toggles between full-screen and scaled content display, or otherwise change the magnification level.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`List<String>`	`getKeys()` Returns the list (with at least one element) of printable representations of the key, which should reflect the `key` property in the JavaScript `KeyboardEvent`.
`default boolean`	`matches(String key)` Checks if `key` is a printable representation for this instance.
`static Key`	`of(String key, String... additionalKeys)` Returns a `Key` instance for a printable representation of the key.

- Field Detail
  - UNIDENTIFIED
```
static final Key UNIDENTIFIED
```
    The user agent wasn't able to map the event's virtual keycode to a specific key value. This can happen due to hardware or software constraints, or because of constraints around the platform on which the user agent is running.
  - ALT
```
static final Key ALT
```
    The Alt (Alternative) key.
  - ALT_GRAPH
```
static final Key ALT_GRAPH
```
    The AltGr or AltGraph (Alternate Graphics) key. Enables the ISO Level 3 shift modifier (where Shift is the level 2 modifier).
  - CAPS_LOCK
```
static final Key CAPS_LOCK
```
    The Caps Lock key. Toggles the capital character lock on and off for subsequent input.
  - CONTROL
```
static final Key CONTROL
```
    The Control, Ctrl, or Ctl key. Allows typing control characters.
  - FN
```
static final Key FN
```
    The Fn (Function modifier) key. Used to allow generating function key (F1-F15, for instance) characters on keyboards without a dedicated function key area. Often handled in hardware so that events aren't generated for this key.
  - FN_LOCK
```
static final Key FN_LOCK
```
    The FnLock or F-Lock (Function Lock) key. Toggles the function key mode described by "Fn" on and off. Often handled in hardware so that events aren't generated for this key.
  - HYPER
```
static final Key HYPER
```
    The Hyper key.
  - META
```
static final Key META
```
    The Meta key. Allows issuing special command inputs. This is the Windows logo key, or the Command or ? key on Mac keyboards.
  - NUM_LOCK
```
static final Key NUM_LOCK
```
    The NumLock (Number Lock) key. Toggles the numeric keypad between number entry some other mode (often directional arrows).
  - SCROLL_LOCK
```
static final Key SCROLL_LOCK
```
    The Scroll Lock key. Toggles beteen scrolling and cursor movement modes.
  - SHIFT
```
static final Key SHIFT
```
    The Shift key. Modifies keystrokes to allow typing upper (or other) case letters, and to support typing punctuation and other special characters.
  - SUPER
```
static final Key SUPER
```
    The Super key.
  - SYMBOL
```
static final Key SYMBOL
```
    The Symbol modifier key (found on certain virtual keyboards).
  - SYMBOL_LOCK
```
static final Key SYMBOL_LOCK
```
    The Symbol Lock key.
  - ENTER
```
static final Key ENTER
```
    The Enter or ? key (sometimes labeled Return).
  - TAB
```
static final Key TAB
```
    The Horizontal Tab key, Tab.
  - SPACE
```
static final Key SPACE
```
    The space key, Space Bar.
  - ARROW_DOWN
```
static final Key ARROW_DOWN
```
    The down arrow key.
  - ARROW_LEFT
```
static final Key ARROW_LEFT
```
    The left arrow key.
  - ARROW_RIGHT
```
static final Key ARROW_RIGHT
```
    The right arrow key.
  - ARROW_UP
```
static final Key ARROW_UP
```
    The up arrow key.
  - END
```
static final Key END
```
    The End key. Moves to the end of content.
  - HOME
```
static final Key HOME
```
    The Home key. Moves to the start of content.
  - PAGE_DOWN
```
static final Key PAGE_DOWN
```
    The Page Down (or PgDn) key. Scrolls down or displays the next page of content.
  - PAGE_UP
```
static final Key PAGE_UP
```
    The Page Up (or PgUp) key. Scrolls up or displays the previous page of content.
  - BACKSPACE
```
static final Key BACKSPACE
```
    The Backspace key. This key is labeled Delete on Mac keyboards.
  - CLEAR
```
static final Key CLEAR
```
    The Clear key. Removes the currently selected input.
  - COPY
```
static final Key COPY
```
    The Copy key (on certain extended keyboards).
  - CR_SEL
```
static final Key CR_SEL
```
    The Cursor Select key, CrSel.
  - CUT
```
static final Key CUT
```
    The Cut key (on certain extended keyboards).
  - DELETE
```
static final Key DELETE
```
    The Delete key, Del.
  - ERASE_EOF
```
static final Key ERASE_EOF
```
    Erase to End of Field. Deletes all characters from the current cursor position to the end of the current field.
  - EX_SEL
```
static final Key EX_SEL
```
    The ExSel (Extend Selection) key.
  - INSERT
```
static final Key INSERT
```
    The Insert key, Ins. Toggles between inserting and overwriting text.
  - PASTE
```
static final Key PASTE
```
    Paste from the clipboard.
  - REDO
```
static final Key REDO
```
    Redo the last action.
  - UNDO
```
static final Key UNDO
```
    Undo the last action.
  - ACCEPT
```
static final Key ACCEPT
```
    The Accept, Commit, or OK key or button. Accepts the currently selected option or input method sequence conversion.
  - AGAIN
```
static final Key AGAIN
```
    The Again key. Redoes or repeats a previous action.
  - ATTN
```
static final Key ATTN
```
    The Attn (Attention) key.
  - CANCEL
```
static final Key CANCEL
```
    The Cancel key.
  - CONTEXT_MENU
```
static final Key CONTEXT_MENU
```
    Shows the context menu. Typically found between the Windows (or OS) key and the Control key on the right side of the keyboard.
  - ESCAPE
```
static final Key ESCAPE
```
    The Esc (Escape) key. Typically used as an exit, cancel, or "escape this operation" button. Historically, the Escape character was used to signal the start of a special control sequence of characters called an "escape sequence."
  - EXECUTE
```
static final Key EXECUTE
```
    The Execute key.
  - FIND
```
static final Key FIND
```
    The Find key. Opens an interface (typically a dialog box) for performing a find/search operation.
  - FINISH
```
static final Key FINISH
```
    The Finish key.
  - HELP
```
static final Key HELP
```
    The Help key. Opens or toggles the display of help information.
  - PAUSE
```
static final Key PAUSE
```
    The Pause key. Pauses the current application or state, if applicable. Note: This shouldn't be confused with the "MediaPause" key value, which is used for media controllers, rather than to control applications and processes.
  - PLAY
```
static final Key PLAY
```
    The Play key. Resumes a previously paused application, if applicable. Note: This shouldn't be confused with the "MediaPlay" key value, which is used for media controllers, rather than to control applications and processes.
  - PROPS
```
static final Key PROPS
```
    The Props (Properties) key.
  - SELECT
```
static final Key SELECT
```
    The Select key.
  - ZOOM_IN
```
static final Key ZOOM_IN
```
    The ZoomIn key.
  - ZOOM_OUT
```
static final Key ZOOM_OUT
```
    The ZoomOut key.
  - BRIGHTNESS_DOWN
```
static final Key BRIGHTNESS_DOWN
```
    The Brightness Down key. Typically used to reduce the brightness of the display.
  - BRIGHTNESS_UP
```
static final Key BRIGHTNESS_UP
```
    The Brightness Up key. Typically increases the brightness of the display.
  - EJECT
```
static final Key EJECT
```
    The Eject key. Ejects removable media (or toggles an optical storage device tray open and closed).
  - LOG_OFF
```
static final Key LOG_OFF
```
    The LogOff key.
  - POWER
```
static final Key POWER
```
    The Power button or key, to toggle power on and off.
    Note: Not all systems pass this key through to the user agent.
  - POWER_OFF
```
static final Key POWER_OFF
```
    The PowerOff or PowerDown key. Shuts off the system.
  - PRINT_SCREEN
```
static final Key PRINT_SCREEN
```
    The PrintScreen or PrtScr key. Sometimes SnapShot. Captures the screen and prints it or saves it to disk.
  - HIBERNATE
```
static final Key HIBERNATE
```
    The Hibernate key. This saves the state of the computer to disk and then shuts down; the computer can be returned to its previous state by restoring the saved state information.
  - STANDBY
```
static final Key STANDBY
```
    The Standby key; also known as Suspend or Sleep. This turns off the display and puts the computer in a low power consumption mode, without completely powering off.
  - WAKE_UP
```
static final Key WAKE_UP
```
    The WakeUp key; used to wake the computer from the hibernation or standby modes.
  - ALL_CANDIDATES
```
static final Key ALL_CANDIDATES
```
    The All Candidates key, which starts multi-candidate mode, in which multiple candidates are displayed for the ongoing input.
  - ALPHANUMERIC
```
static final Key ALPHANUMERIC
```
    The Alphanumeric key.
  - CODE_INPUT
```
static final Key CODE_INPUT
```
    The Code Input key, which enables code input mode, which lets the user enter characters by typing their code points (their Unicode character numbers, typically).
  - COMPOSE
```
static final Key COMPOSE
```
    The Compose key.
  - CONVERT
```
static final Key CONVERT
```
    The Convert key, which instructs the IME to convert the current input method sequence into the resulting character.
  - DEAD
```
static final Key DEAD
```
    A dead "combining" key; that is, a key which is used in tandem with other keys to generate accented and other modified characters.
  - FINAL_MODE
```
static final Key FINAL_MODE
```
    The Final (Final Mode) key is used on some Asian keyboards to enter final mode when using IMEs.
  - GROUP_FIRST
```
static final Key GROUP_FIRST
```
    Switches to the first character group on an ISO/IEC 9995 keyboard. Each key may have multiple groups of characters, each in its own column. Pressing this key instructs the device to interpret keypresses as coming from the first column on subsequent keystrokes.
  - GROUP_LAST
```
static final Key GROUP_LAST
```
    Switches to the last character group on an ISO/IEC 9995 keyboard.
  - GROUP_NEXT
```
static final Key GROUP_NEXT
```
    Switches to the next character group on an ISO/IEC 9995 keyboard.
  - GROUP_PREVIOUS
```
static final Key GROUP_PREVIOUS
```
    Switches to the previous character group on an ISO/IEC 9995 keyboard.
  - MODE_CHANGE
```
static final Key MODE_CHANGE
```
    The Mode Change key. Toggles or cycles among input modes of IMEs.
  - NEXT_CANDIDATE
```
static final Key NEXT_CANDIDATE
```
    The Next Candidate function key. Selects the next possible match for the ongoing input.
  - NON_CONVERT
```
static final Key NON_CONVERT
```
    The NonConvert ("Don't convert") key. This accepts the current input method sequence without running conversion when using an IME.
  - PREVIOUS_CANDIDATE
```
static final Key PREVIOUS_CANDIDATE
```
    The Previous Candidate key. Selects the previous possible match for the ongoing input.
  - PROCESS
```
static final Key PROCESS
```
    The Process key. Instructs the IME to process the conversion.
  - SINGLE_CANDIDATE
```
static final Key SINGLE_CANDIDATE
```
    The Single Candidate key. Enables single candidate mode (as opposed to multi-candidate mode); in this mode, only one candidate is displayed at a time.
  - HANGUL_MODE
```
static final Key HANGUL_MODE
```
    The Hangul (Korean character set) mode key, which toggles between Hangul and English entry modes.
  - HANJA_MODE
```
static final Key HANJA_MODE
```
    Selects the Hanja mode, for converting Hangul characters to the more specific Hanja characters.
  - JUNJA_MODE
```
static final Key JUNJA_MODE
```
    Selects the Junja mode, in which Korean is represented using single-byte Latin characters.
  - EISU
```
static final Key EISU
```
    The Eisu key. This key's purpose is defined by the IME, but may be used to close the IME.
  - HANKAKU
```
static final Key HANKAKU
```
    The Hankaku (half-width characters) key.
  - HIRAGANA
```
static final Key HIRAGANA
```
    The Hiragana key; selects Kana characters mode.
  - HIRAGANA_KATAKANA
```
static final Key HIRAGANA_KATAKANA
```
    Toggles between the Hiragana and Katakana writing systems.
  - KANA_MODE
```
static final Key KANA_MODE
```
    The Kana Mode (Kana Lock) key.
  - KANJI_MODE
```
static final Key KANJI_MODE
```
    The Kanji Mode key. Enables entering Japanese text using the ideographic characters of Chinese origin.
  - KATAKANA
```
static final Key KATAKANA
```
    The Katakana key.
  - ROMAJI
```
static final Key ROMAJI
```
    The Romaji key; selects the Roman character set.
  - ZENKAKU
```
static final Key ZENKAKU
```
    The Zenkaku (full width) characters key.
  - ZENKAKU_HANAKU
```
static final Key ZENKAKU_HANAKU
```
    The Zenkaku/Hankaku (full width/half width) toggle key.
  - F1
```
static final Key F1
```
    The first general-purpose function key, F1.
  - F2
```
static final Key F2
```
    The F2 key.
  - F3
```
static final Key F3
```
    The F3 key.
  - F4
```
static final Key F4
```
    The F4 key.
  - F5
```
static final Key F5
```
    The F5 key.
  - F6
```
static final Key F6
```
    The F6 key.
  - F7
```
static final Key F7
```
    The F7 key.
  - F8
```
static final Key F8
```
    The F8 key.
  - F9
```
static final Key F9
```
    The F9 key.
  - F10
```
static final Key F10
```
    The F10 key.
  - F11
```
static final Key F11
```
    The F11 key.
  - F12
```
static final Key F12
```
    The F12 key.
  - F13
```
static final Key F13
```
    The F13 key.
  - F14
```
static final Key F14
```
    The F14 key.
  - F15
```
static final Key F15
```
    The F15 key.
  - F16
```
static final Key F16
```
    The F16 key.
  - F17
```
static final Key F17
```
    The F17 key.
  - F18
```
static final Key F18
```
    The F18 key.
  - F19
```
static final Key F19
```
    The F19 key.
  - F20
```
static final Key F20
```
    The F20 key.
  - SOFT1
```
static final Key SOFT1
```
    The first general-purpose virtual function key.
  - SOFT2
```
static final Key SOFT2
```
    The second general-purpose virtual function key.
  - SOFT3
```
static final Key SOFT3
```
    The third general-purpose virtual function key.
  - SOFT4
```
static final Key SOFT4
```
    The fourth general-purpose virtual function key.
  - APP_SWITCH
```
static final Key APP_SWITCH
```
    Presents a list of recently-used applications which lets the user change apps quickly.
  - CALL
```
static final Key CALL
```
    The Call key; dials the number which has been entered.
  - CAMERA
```
static final Key CAMERA
```
    The Camera key; activates the camera.
  - CAMERA_FOCUS
```
static final Key CAMERA_FOCUS
```
    The Focus key; focuses the camera.
  - END_CALL
```
static final Key END_CALL
```
    The End Call or Hang Up button.
  - GO_BACK
```
static final Key GO_BACK
```
    The Back button.
  - GO_HOME
```
static final Key GO_HOME
```
    The Home button, which takes the user to the phone's main screen (usually an application launcher).
  - HEADSET_HOOK
```
static final Key HEADSET_HOOK
```
    The Headset Hook key. This is typically actually a button on the headset which is used to hang up calls and play or pause media.
  - LAST_NUMBER_REDIAL
```
static final Key LAST_NUMBER_REDIAL
```
    The Redial button, which redials the last-called number.
  - NOTIFICATION
```
static final Key NOTIFICATION
```
    The Notification key.
  - MANNER_MODE
```
static final Key MANNER_MODE
```
    A button which cycles among the notification modes: silent, vibrate, ring, and so forth.
  - VOICE_DIAL
```
static final Key VOICE_DIAL
```
    The Voice Dial key. Initiates voice dialing.
  - CHANNEL_DOWN
```
static final Key CHANNEL_DOWN
```
    Switches to the previous channel.
  - CHANNEL_UP
```
static final Key CHANNEL_UP
```
    Switches to the next channel.
  - MEDIA_FAST_FORWARD
```
static final Key MEDIA_FAST_FORWARD
```
    Starts, continues, or increases the speed of fast forwarding the media.
  - MEDIA_PAUSE
```
static final Key MEDIA_PAUSE
```
    Pauses the currently playing media. Some older applications use simply "Pause" but this is not correct.
  - MEDIA_PLAY
```
static final Key MEDIA_PLAY
```
    Starts or continues playing media at normal speed, if not already doing so. Has no effect otherwise.
  - MEDIA_PLAY_PAUSE
```
static final Key MEDIA_PLAY_PAUSE
```
    Toggles between playing and pausing the current media.
  - MEDIA_RECORD
```
static final Key MEDIA_RECORD
```
    Starts or resumes recording media.
  - MEDIA_REWIND
```
static final Key MEDIA_REWIND
```
    Starts, continues, or increases the speed of rewinding the media.
  - MEDIA_STOP
```
static final Key MEDIA_STOP
```
    Stops the current media activity (such as playing, recording, pausing, forwarding, or rewinding). Has no effect if the media is currently stopped already.
  - MEDIA_TRACK_NEXT
```
static final Key MEDIA_TRACK_NEXT
```
    Seeks to the next media or program track.
  - MEDIA_TRACK_PREVIOUS
```
static final Key MEDIA_TRACK_PREVIOUS
```
    Seeks to the previous media or program track.
  - AUDIO_BALANCE_LEFT
```
static final Key AUDIO_BALANCE_LEFT
```
    Adjusts audio balance toward the left.
  - AUDIO_BALANCE_RIGHT
```
static final Key AUDIO_BALANCE_RIGHT
```
    Adjusts audio balance toward the right.
  - AUDIO_BASS_DOWN
```
static final Key AUDIO_BASS_DOWN
```
    Decreases the amount of bass.
  - AUDIO_BASS_BOOST_DOWN
```
static final Key AUDIO_BASS_BOOST_DOWN
```
    Reduces bass boosting or cycles downward through bass boost modes or states.
  - AUDIO_BASS_BOOST_TOGGLE
```
static final Key AUDIO_BASS_BOOST_TOGGLE
```
    Toggles bass boosting on and off.
  - AUDIO_BASS_BOOST_UP
```
static final Key AUDIO_BASS_BOOST_UP
```
    Increases the amount of bass boosting, or cycles upward through a set of bass boost modes or states.
  - AUDIO_BASS_UP
```
static final Key AUDIO_BASS_UP
```
    Increases the amount of bass.
  - AUDIO_FADER_FRONT
```
static final Key AUDIO_FADER_FRONT
```
    Adjusts the audio fader toward the front.
  - AUDIO_FADER_REAR
```
static final Key AUDIO_FADER_REAR
```
    Adjusts the audio fader toward the rear.
  - AUDIO_SURROUND_MODE_NEXT
```
static final Key AUDIO_SURROUND_MODE_NEXT
```
    Selects the next available surround sound mode.
  - AUDIO_TREBLE_DOWN
```
static final Key AUDIO_TREBLE_DOWN
```
    Decreases the amount of treble.
  - AUDIO_TREBLE_UP
```
static final Key AUDIO_TREBLE_UP
```
    Increases the amount of treble.
  - AUDIO_VOLUME_DOWN
```
static final Key AUDIO_VOLUME_DOWN
```
    Decreases the audio volume.
  - AUDIO_VOLUME_MUTE
```
static final Key AUDIO_VOLUME_MUTE
```
    Mutes the audio.
  - AUDIO_VOLUME_UP
```
static final Key AUDIO_VOLUME_UP
```
    Increases the audio volume.
  - MICROPHONE_TOGGLE
```
static final Key MICROPHONE_TOGGLE
```
    Toggles the microphone on and off.
  - MICROPHONE_VOLUME_DOWN
```
static final Key MICROPHONE_VOLUME_DOWN
```
    Decreases the microphone's input volume.
  - MICROPHONE_VOLUME_MUTE
```
static final Key MICROPHONE_VOLUME_MUTE
```
    Mutes the microphone input.
  - MICROPHONE_VOLUME_UP
```
static final Key MICROPHONE_VOLUME_UP
```
    Increases the microphone's input volume.
  - TV
```
static final Key TV
```
    Switches into TV viewing mode.
  - TV_3D_MODE
```
static final Key TV_3D_MODE
```
    Toggles 3D TV mode on and off.
  - TV_ANTENNA_CABLE
```
static final Key TV_ANTENNA_CABLE
```
    Toggles between antenna and cable inputs.
  - TV_AUDIO_DESCRIPTION
```
static final Key TV_AUDIO_DESCRIPTION
```
    Toggles audio description mode on and off.
  - TV_AUDIO_DESCRIPTION_MIX_DOWN
```
static final Key TV_AUDIO_DESCRIPTION_MIX_DOWN
```
    Decreases the audio description's mixing volume; reduces the volume of the audio descriptions relative to the program sound.
  - TV_AUDIO_DESCRIPTION_MIX_UP
```
static final Key TV_AUDIO_DESCRIPTION_MIX_UP
```
    Increases the audio description's mixing volume; increases the volume of the audio descriptions relative to the program sound.
  - TV_CONTENTS_MENU
```
static final Key TV_CONTENTS_MENU
```
    Displays or hides the media contents available for playback (this may be a channel guide showing the currently airing programs, or a list of media files to play).
  - TV_DATA_SERVICE
```
static final Key TV_DATA_SERVICE
```
    Displays or hides the TV's data service menu.
  - TV_INPUT
```
static final Key TV_INPUT
```
    Cycles the input mode on an external TV.
  - TV_INPUT_COMPONENT1
```
static final Key TV_INPUT_COMPONENT1
```
    Switches to the input "Component 1."
  - TV_INPUT_COMPONENT2
```
static final Key TV_INPUT_COMPONENT2
```
    Switches to the input "Component 2."
  - TV_INPUT_COMPOSITE1
```
static final Key TV_INPUT_COMPOSITE1
```
    Switches to the input "Composite 1."
  - TV_INPUT_COMPOSITE2
```
static final Key TV_INPUT_COMPOSITE2
```
    Switches to the input "Composite 2."
  - TV_INPUT_HDMI1
```
static final Key TV_INPUT_HDMI1
```
    Switches to the input "HDMI 1."
  - TV_INPUT_HDMI2
```
static final Key TV_INPUT_HDMI2
```
    Switches to the input "HDMI 2."
  - TV_INPUT_HDMI3
```
static final Key TV_INPUT_HDMI3
```
    Switches to the input "HDMI 3."
  - TV_INPUT_HDMI4
```
static final Key TV_INPUT_HDMI4
```
    Switches to the input "HDMI 4."
  - TV_INPUT_VGA1
```
static final Key TV_INPUT_VGA1
```
    Switches to the input "VGA 1."
  - TV_MEDIA_CONTEXT
```
static final Key TV_MEDIA_CONTEXT
```
    The Media Context menu key.
  - TV_NETWORK
```
static final Key TV_NETWORK
```
    Toggle the TV's network connection on and off.
  - TV_NUMBER_ENTRY
```
static final Key TV_NUMBER_ENTRY
```
    Put the TV into number entry mode.
  - TV_POWER
```
static final Key TV_POWER
```
    The device's power button.
  - TV_RADIO_SERVICE
```
static final Key TV_RADIO_SERVICE
```
    Radio button.
  - TV_SATELLITE
```
static final Key TV_SATELLITE
```
    Satellite button.
  - TV_SATELLITE_BS
```
static final Key TV_SATELLITE_BS
```
    Broadcast Satellite button.
  - TV_SATELLITE_CS
```
static final Key TV_SATELLITE_CS
```
    Communication Satellite button.
  - TV_SATELLITE_TOGGLE
```
static final Key TV_SATELLITE_TOGGLE
```
    Toggles among available satellites.
  - TV_TERRESTRIAL_ANALOG
```
static final Key TV_TERRESTRIAL_ANALOG
```
    Selects analog terrestrial television service (analog cable or antenna reception).
  - TV_TERRESTRIAL_DIGITAL
```
static final Key TV_TERRESTRIAL_DIGITAL
```
    Selects digital terrestrial television service (digital cable or antenna reception).
  - TV_TIMER
```
static final Key TV_TIMER
```
    Timer programming button.
  - AVR_INPUT
```
static final Key AVR_INPUT
```
    Changes the input mode on an external audio/video receiver (AVR) unit.
  - AVR_POWER
```
static final Key AVR_POWER
```
    Toggles the power on an external AVR unit.
  - COLOR_F0_RED
```
static final Key COLOR_F0_RED
```
    General-purpose media function key, color-coded red; this has index 0 among the colored keys.
  - COLOR_F1_GREEN
```
static final Key COLOR_F1_GREEN
```
    General-purpose media function key, color-coded green; this has index 1 among the colored keys.
  - COLOR_F2_YELLOW
```
static final Key COLOR_F2_YELLOW
```
    General-purpose media function key, color-coded yellow; this has index 2 among the colored keys.
  - COLOR_F3_BLUE
```
static final Key COLOR_F3_BLUE
```
    General-purpose media function key, color-coded blue; this has index 3 among the colored keys.
  - COLOR_F4_GREY
```
static final Key COLOR_F4_GREY
```
    General-purpose media function key, color-coded grey; this has index 4 among the colored keys.
  - COLOR_F5_BROWN
```
static final Key COLOR_F5_BROWN
```
    General-purpose media function key, color-coded brown; this has index 5 among the colored keys.
  - CLOSED_CAPTION_TOGGLE
```
static final Key CLOSED_CAPTION_TOGGLE
```
    Toggles closed captioning on and off.
  - DIMMER
```
static final Key DIMMER
```
    Adjusts the brightness of the device by toggling between two brightness levels or by cycling among multiple brightness levels.
  - DISPLAY_SWAP
```
static final Key DISPLAY_SWAP
```
    Cycles among video sources.
  - DVR
```
static final Key DVR
```
    Switches the input source to the Digital Video Recorder (DVR).
  - EXIT
```
static final Key EXIT
```
    The Exit button, which exits the current application or menu.
  - FAVORITE_CLEAR0
```
static final Key FAVORITE_CLEAR0
```
    Clears the program or content stored in the first favorites list slot.
  - FAVORITE_CLEAR1
```
static final Key FAVORITE_CLEAR1
```
    Clears the program or content stored in the second favorites list slot.
  - FAVORITE_CLEAR2
```
static final Key FAVORITE_CLEAR2
```
    Clears the program or content stored in the third favorites list slot.
  - FAVORITE_CLEAR3
```
static final Key FAVORITE_CLEAR3
```
    Clears the program or content stored in the fourth favorites list slot.
  - FAVORITE_RECALL0
```
static final Key FAVORITE_RECALL0
```
    Selects (recalls) the program or content stored in the first favorites list slot.
  - FAVORITE_RECALL1
```
static final Key FAVORITE_RECALL1
```
    Selects (recalls) the program or content stored in the second favorites list slot.
  - FAVORITE_RECALL2
```
static final Key FAVORITE_RECALL2
```
    Selects (recalls) the program or content stored in the third favorites list slot.
  - FAVORITE_RECALL3
```
static final Key FAVORITE_RECALL3
```
    Selects (recalls) the program or content stored in the fourth favorites list slot.
  - FAVORITE_STORE0
```
static final Key FAVORITE_STORE0
```
    Stores the current program or content into the first favorites list slot.
  - FAVORITE_STORE1
```
static final Key FAVORITE_STORE1
```
    Stores the current program or content into the second favorites list slot.
  - FAVORITE_STORE2
```
static final Key FAVORITE_STORE2
```
    Stores the current program or content into the third favorites list slot.
  - FAVORITE_STORE3
```
static final Key FAVORITE_STORE3
```
    Stores the current program or content into the fourth favorites list slot.
  - GUIDE
```
static final Key GUIDE
```
    Toggles the display of the program or content guide.
  - GUIDE_NEXT_DAY
```
static final Key GUIDE_NEXT_DAY
```
    If the guide is currently displayed, this button tells the guide to display the next day's content.
  - GUIDE_PREVIOUS_DAY
```
static final Key GUIDE_PREVIOUS_DAY
```
    If the guide is currently displayed, this button tells the guide to display the previous day's content.
  - INFO
```
static final Key INFO
```
    Toggles the display of information about the currently selected content, program, or media.
  - INSTANT_REPLAY
```
static final Key INSTANT_REPLAY
```
    Tells the device to perform an instant replay (typically some form of jumping back a short amount of time then playing it again, possibly but not usually in slow motion).
  - LINK
```
static final Key LINK
```
    Opens content linked to the current program, if available and possible.
  - LIST_PROGRAM
```
static final Key LIST_PROGRAM
```
    Lists the current program.
  - LIVE_CONTENT
```
static final Key LIVE_CONTENT
```
    Toggles a display listing currently available live content or programs.
  - LOCK
```
static final Key LOCK
```
    Locks or unlocks the currently selected content or program.
  - MEDIA_APPS
```
static final Key MEDIA_APPS
```
    Presents a list of media applications, such as photo viewers, audio and video players, and games.
  - MEDIA_AUDIO_TRACK
```
static final Key MEDIA_AUDIO_TRACK
```
    The Audio Track key.
  - MEDIA_LAST
```
static final Key MEDIA_LAST
```
    Jumps back to the last-viewed content, program, or other media.
  - MEDIA_SKIP_BACKWARD
```
static final Key MEDIA_SKIP_BACKWARD
```
    Skips backward to the previous content or program.
  - MEDIA_SKIP_FORWARD
```
static final Key MEDIA_SKIP_FORWARD
```
    Skips forward to the next content or program.
  - MEDIA_STEP_BACKWARD
```
static final Key MEDIA_STEP_BACKWARD
```
    Steps backward to the previous content or program.
  - MEDIA_STEP_FORWARD
```
static final Key MEDIA_STEP_FORWARD
```
    Steps forward to the next content or program.
  - MEDIA_TOP_MENU
```
static final Key MEDIA_TOP_MENU
```
    Top Menu button; opens the media's main menu, such as on a DVD or Blu-Ray disc.
  - NAVIGATE_IN
```
static final Key NAVIGATE_IN
```
    Navigates into a submenu or option.
  - NAVIGATE_NEXT
```
static final Key NAVIGATE_NEXT
```
    Navigates to the next item.
  - NAVIGATE_OUT
```
static final Key NAVIGATE_OUT
```
    Navigates out of the current screen or menu.
  - NAVIGATE_PREVIOUS
```
static final Key NAVIGATE_PREVIOUS
```
    Navigates to the previous item.
  - NEXT_FAVORITE_CHANNEL
```
static final Key NEXT_FAVORITE_CHANNEL
```
    Cycles to the next channel in the favorites list.
  - NEXT_USER_PROFILE
```
static final Key NEXT_USER_PROFILE
```
    Cycles to the next saved user profile, if this feature is supported and multiple profiles exist.
  - ON_DEMAND
```
static final Key ON_DEMAND
```
    Opens the user interface for selecting on demand content or programs to watch.
  - PAIRING
```
static final Key PAIRING
```
    Starts the process of pairing the remote with a device to be controlled.
  - PINP_DOWN
```
static final Key PINP_DOWN
```
    A button to move the picture-in-picture view downward.
  - PINP_MOVE
```
static final Key PINP_MOVE
```
    A button to control moving the picture-in-picture view.
  - PINP_TOGGLE
```
static final Key PINP_TOGGLE
```
    Toggles display of the picture-in-picture view on and off.
  - PINP_UP
```
static final Key PINP_UP
```
    A button to move the picture-in-picture view upward.
  - PLAY_SPEED_DOWN
```
static final Key PLAY_SPEED_DOWN
```
    Decreases the media playback rate.
  - PLAY_SPEED_RESET
```
static final Key PLAY_SPEED_RESET
```
    Returns the media playback rate to normal.
  - PLAY_SPEED_UP
```
static final Key PLAY_SPEED_UP
```
    Increases the media playback rate.
  - RANDOM_TOGGLE
```
static final Key RANDOM_TOGGLE
```
    Toggles random media (also known as "shuffle mode") on and off.
  - RC_LOW_BATTERY
```
static final Key RC_LOW_BATTERY
```
    A code sent when the remote control's battery is low. This doesn't actually correspond to a physical key at all.
  - RECORD_SPEED_NEXT
```
static final Key RECORD_SPEED_NEXT
```
    Cycles among the available media recording speeds.
  - RF_BYPASS
```
static final Key RF_BYPASS
```
    Toggles radio frequency (RF) input bypass mode on and off. RF bypass mode passes RF input directly to the RF output without any processing or filtering.
  - SCAN_CHANNELS_TOGGLE
```
static final Key SCAN_CHANNELS_TOGGLE
```
    Toggles the channel scan mode on and off; this is a mode which flips through channels automatically until the user stops the scan.
  - SCREEN_MODE_NEXT
```
static final Key SCREEN_MODE_NEXT
```
    Cycles through the available screen display modes.
  - SETTINGS
```
static final Key SETTINGS
```
    Toggles display of the device's settings screen on and off.
  - SPLIT_SCREEN_TOGGLE
```
static final Key SPLIT_SCREEN_TOGGLE
```
    Toggles split screen display mode on and off.
  - STB_INPUT
```
static final Key STB_INPUT
```
    Cycles among input modes on an external set-top box (STB).
  - STB_POWER
```
static final Key STB_POWER
```
    Toggles on and off an external STB.
  - SUBTITLE
```
static final Key SUBTITLE
```
    Toggles the display of subtitles on and off if they're available.
  - TELETEXT
```
static final Key TELETEXT
```
    Toggles display of teletext, if available.
  - VIDEO_MODE_NEXT
```
static final Key VIDEO_MODE_NEXT
```
    Cycles through the available video modes.
  - WINK
```
static final Key WINK
```
    Causes the device to identify itself in some fashion, such as by flashing a light, briefly changing the brightness of indicator lights, or emitting a tone.
  - ZOOM_TOGGLE
```
static final Key ZOOM_TOGGLE
```
    Toggles between full-screen and scaled content display, or otherwise change the magnification level.
  - SPEECH_CORRECTION_LIST
```
static final Key SPEECH_CORRECTION_LIST
```
    Presents a list of possible corrections for a word which was incorrectly identified.
  - SPEECH_INPUT_TOGGLE
```
static final Key SPEECH_INPUT_TOGGLE
```
    Toggles between dictation mode and command/control mode. This lets the speech engine know whether to interpret spoken words as input text or as commands.
  - CLOSE
```
static final Key CLOSE
```
    Closes the current document or message. Must not exit the application.
  - NEW
```
static final Key NEW
```
    Creates a new document or message.
  - OPEN
```
static final Key OPEN
```
    Opens an existing document or message.
  - PRINT
```
static final Key PRINT
```
    Prints the current document or message.
  - SAVE
```
static final Key SAVE
```
    Saves the current document or message.
  - SPELL_CHECK
```
static final Key SPELL_CHECK
```
    Starts spell checking the current document.
  - MAIL_FORWARD
```
static final Key MAIL_FORWARD
```
    Opens the user interface to forward a message.
  - MAIL_REPLY
```
static final Key MAIL_REPLY
```
    Opens the user interface to reply to a message.
  - MAIL_SEND
```
static final Key MAIL_SEND
```
    Sends the current message.
  - LAUNCH_CALCULATOR
```
static final Key LAUNCH_CALCULATOR
```
    The Calculator key. This is often used as a generic application launcher key (APPCOMMAND_LAUNCH_APP2).
  - LAUNCH_CALENDAR
```
static final Key LAUNCH_CALENDAR
```
    The Calendar key.
  - LAUNCH_CONTACTS
```
static final Key LAUNCH_CONTACTS
```
    The Contacts key.
  - LAUNCH_MAIL
```
static final Key LAUNCH_MAIL
```
    The Mail key.
  - LAUNCH_MEDIA_PLAYER
```
static final Key LAUNCH_MEDIA_PLAYER
```
    The Media Player key.
  - LAUNCH_MUSIC_PLAYER
```
static final Key LAUNCH_MUSIC_PLAYER
```
    The Music Player key.
  - LAUNCH_MY_COMPUTER
```
static final Key LAUNCH_MY_COMPUTER
```
    The My Computer key on Windows keyboards. This is often used as a generic application launcher key (APPCOMMAND_LAUNCH_APP1).
  - LAUNCH_PHONE
```
static final Key LAUNCH_PHONE
```
    The Phone key, to open the phone dialer application if one is present.
  - LAUNCH_SCREEN_SAVER
```
static final Key LAUNCH_SCREEN_SAVER
```
    The Screen Saver key.
  - LAUNCH_SPREADSHEET
```
static final Key LAUNCH_SPREADSHEET
```
    The Spreadsheet key.
  - LAUNCH_WEB_BROWSER
```
static final Key LAUNCH_WEB_BROWSER
```
    The Web Browser key.
  - LAUNCH_WEB_CAM
```
static final Key LAUNCH_WEB_CAM
```
    The WebCam key. Opens the webcam application.
  - LAUNCH_WORD_PROCESSOR
```
static final Key LAUNCH_WORD_PROCESSOR
```
    The Word Processor key. This may be an icon of a specific word processor application, or a generic document icon.
  - LAUNCH_APPLICATION1
```
static final Key LAUNCH_APPLICATION1
```
    The first generic application launcher button.
  - LAUNCH_APPLICATION2
```
static final Key LAUNCH_APPLICATION2
```
    The second generic application launcher button.
  - LAUNCH_APPLICATION3
```
static final Key LAUNCH_APPLICATION3
```
    The third generic application launcher button.
  - LAUNCH_APPLICATION4
```
static final Key LAUNCH_APPLICATION4
```
    The fourth generic application launcher button.
  - LAUNCH_APPLICATION5
```
static final Key LAUNCH_APPLICATION5
```
    The fifth generic application launcher button.
  - LAUNCH_APPLICATION6
```
static final Key LAUNCH_APPLICATION6
```
    The sixth generic application launcher button.
  - LAUNCH_APPLICATION7
```
static final Key LAUNCH_APPLICATION7
```
    The seventh generic application launcher button.
  - LAUNCH_APPLICATION8
```
static final Key LAUNCH_APPLICATION8
```
    The eighth generic application launcher button.
  - LAUNCH_APPLICATION9
```
static final Key LAUNCH_APPLICATION9
```
    The ninth generic application launcher button.
  - LAUNCH_APPLICATION10
```
static final Key LAUNCH_APPLICATION10
```
    The 10th generic application launcher button.
  - LAUNCH_APPLICATION11
```
static final Key LAUNCH_APPLICATION11
```
    The 11th generic application launcher button.
  - LAUNCH_APPLICATION12
```
static final Key LAUNCH_APPLICATION12
```
    The 12th generic application launcher button.
  - LAUNCH_APPLICATION13
```
static final Key LAUNCH_APPLICATION13
```
    The 13th generic application launcher button.
  - LAUNCH_APPLICATION14
```
static final Key LAUNCH_APPLICATION14
```
    The 14th generic application launcher button.
  - LAUNCH_APPLICATION15
```
static final Key LAUNCH_APPLICATION15
```
    The 15th generic application launcher button.
  - LAUNCH_APPLICATION16
```
static final Key LAUNCH_APPLICATION16
```
    The 16th generic application launcher button.
  - BROWSER_BACK
```
static final Key BROWSER_BACK
```
    Navigates to the previous content or page in the current Web view's history.
  - BROWSER_FAVORITES
```
static final Key BROWSER_FAVORITES
```
    Opens the user's list of bookmarks/favorites.
  - BROWSER_FORWARD
```
static final Key BROWSER_FORWARD
```
    Navigates to the next content or page in the current Web view's history.
  - BROWSER_HOME
```
static final Key BROWSER_HOME
```
    Navigates to the user's preferred home page.
  - BROWSER_REFRESH
```
static final Key BROWSER_REFRESH
```
    Refreshes the current page or content.
  - BROWSER_SEARCH
```
static final Key BROWSER_SEARCH
```
    Activates the user's preferred search engine or the search interface within their browser.
  - BROWSER_STOP
```
static final Key BROWSER_STOP
```
    Stops loading the currently displayed Web view or content.
  - DECIMAL
```
static final Key DECIMAL
```
    The decimal point key (typically . or ,) depending on the region.
  - KEY11
```
static final Key KEY11
```
    The 11 key found on certain media numeric keypads.
  - KEY12
```
static final Key KEY12
```
    The 12 key found on certain media numeric keypads.
  - MULTIPLY
```
static final Key MULTIPLY
```
    The numeric keypad's multiplication key, *.
  - ADD
```
static final Key ADD
```
    The numeric keypad's addition key, +.
  - DIVIDE
```
static final Key DIVIDE
```
    The numeric keypad's division key, /.
  - SUBTRACT
```
static final Key SUBTRACT
```
    The numeric keypad's subtraction key, -.
  - SEPARATOR
```
static final Key SEPARATOR
```
    The numeric keypad's places separator character (in the United States, this is a comma, but elsewhere it is frequently a period).
- Method Detail
  - of
```
static Key of(String key,
              String... additionalKeys)
```
    Returns a Key instance for a printable representation of the key.
    The optional additionalKeys parameter can be used to create an instance which will match additional printable representations of the same key, in the rare cases where browsers don't agree.
    See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key
    
    Parameters:
    
    key - the printable representation of the key, not null nor empty
    
    additionalKeys - additional printable representations of the same key
    
    Returns:
    
    the Key instance
  - getKeys
```
List<String> getKeys()
```
    Returns the list (with at least one element) of printable representations of the key, which should reflect the key property in the JavaScript KeyboardEvent.
    See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key
    
    Returns:
    
    the list of printable representations of the key
  - matches
```
default boolean matches(String key)
```
    Checks if key is a printable representation for this instance.
    
    Parameters:
    
    key - a printable representation of a key
    
    Returns:
    
    true, if key is a printable representation for this instance

Interface Key

Field Summary

Method Summary

Field Detail

UNIDENTIFIED

ALT

ALT_GRAPH

CAPS_LOCK

CONTROL

FN

FN_LOCK

HYPER

META

NUM_LOCK

SCROLL_LOCK

SHIFT

SUPER

SYMBOL

SYMBOL_LOCK

ENTER

TAB

SPACE

ARROW_DOWN

ARROW_LEFT

ARROW_RIGHT

ARROW_UP

END

HOME

PAGE_DOWN

PAGE_UP

BACKSPACE

CLEAR

COPY

CR_SEL

CUT

DELETE

ERASE_EOF

EX_SEL

INSERT

PASTE

REDO

UNDO

ACCEPT

AGAIN

ATTN

CANCEL

CONTEXT_MENU

ESCAPE

EXECUTE

FIND

FINISH

HELP

PAUSE

PLAY

PROPS

SELECT

ZOOM_IN

ZOOM_OUT

BRIGHTNESS_DOWN

BRIGHTNESS_UP

EJECT

LOG_OFF

POWER

POWER_OFF

PRINT_SCREEN

HIBERNATE

STANDBY

WAKE_UP

ALL_CANDIDATES

ALPHANUMERIC

CODE_INPUT

COMPOSE

CONVERT

DEAD

FINAL_MODE

GROUP_FIRST

GROUP_LAST

GROUP_NEXT

GROUP_PREVIOUS

MODE_CHANGE