KeyEvent (Java Platform SE 7 )

java.lang.Object
- java.util.EventObject
- - java.awt.AWTEvent
  - - java.awt.event.ComponentEvent
    - - java.awt.event.InputEvent
      - java.awt.event.KeyEvent

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

MenuKeyEvent
```
public class KeyEvent
extends InputEvent
```
An event which indicates that a keystroke occurred in a component.
This low-level event is generated by a component object (such as a text field) when a key is pressed, released, or typed. The event is passed to every KeyListener or KeyAdapter object which registered to receive such events using the component's addKeyListener method. (KeyAdapter objects implement the KeyListener interface.) Each such listener object gets this KeyEvent when the event occurs.
"Key typed" events are higher-level and generally do not depend on the platform or keyboard layout. They are generated when a Unicode character is entered, and are the preferred way to find out about character input. In the simplest case, a key typed event is produced by a single key press (e.g., 'a'). Often, however, characters are produced by series of key presses (e.g., 'shift' + 'a'), and the mapping from key pressed events to key typed events may be many-to-one or many-to-many. Key releases are not usually necessary to generate a key typed event, but there are some cases where the key typed event is not generated until a key is released (e.g., entering ASCII sequences via the Alt-Numpad method in Windows). No key typed events are generated for keys that don't generate Unicode characters (e.g., action keys, modifier keys, etc.).
The getKeyChar method always returns a valid Unicode character or CHAR_UNDEFINED. Character input is reported by KEY_TYPED events: KEY_PRESSED and KEY_RELEASED events are not necessarily associated with character input. Therefore, the result of the getKeyChar method is guaranteed to be meaningful only for KEY_TYPED events.
For key pressed and key released events, the getKeyCode method returns the event's keyCode. For key typed events, the getKeyCode method always returns VK_UNDEFINED. The getExtendedKeyCode method may also be used with many international keyboard layouts.
"Key pressed" and "key released" events are lower-level and depend on the platform and keyboard layout. They are generated whenever a key is pressed or released, and are the only way to find out about keys that don't generate character input (e.g., action keys, modifier keys, etc.). The key being pressed or released is indicated by the getKeyCode and getExtendedKeyCode methods, which return a virtual key code.
Virtual key codes are used to report which keyboard key has been pressed, rather than a character generated by the combination of one or more keystrokes (such as "A", which comes from shift and "a").
For example, pressing the Shift key will cause a KEY_PRESSED event with a VK_SHIFT keyCode, while pressing the 'a' key will result in a VK_A keyCode. After the 'a' key is released, a KEY_RELEASED event will be fired with VK_A. Separately, a KEY_TYPED event with a keyChar value of 'A' is generated.
Pressing and releasing a key on the keyboard results in the generating the following key events (in order):
```
    KEY_PRESSED
    KEY_TYPED (is only generated if a valid Unicode character could be generated.)
    KEY_RELEASED
 
```
But in some cases (e.g. auto-repeat or input method is activated) the order could be different (and platform dependent).
Notes:
- Key combinations which do not result in Unicode characters, such as action keys like F1 and the HELP key, do not generate KEY_TYPED events.
- Not all keyboards or systems are capable of generating all virtual key codes. No attempt is made in Java to generate these keys artificially.
- Virtual key codes do not identify a physical key: they depend on the platform and keyboard layout. For example, the key that generates VK_Q when using a U.S. keyboard layout will generate VK_A when using a French keyboard layout.
- The key that generates VK_Q when using a U.S. keyboard layout also generates a unique code for Russian or Hebrew layout. There is no a VK_ constant for these and many other codes in various layouts. These codes may be obtained by using getExtendedKeyCode and are used whenever a VK_ constant is used.
- Not all characters have a keycode associated with them. For example, there is no keycode for the question mark because there is no keyboard for which it appears on the primary layer.
- In order to support the platform-independent handling of action keys, the Java platform uses a few additional virtual key constants for functions that would otherwise have to be recognized by interpreting virtual key codes and modifiers. For example, for Japanese Windows keyboards, VK_ALL_CANDIDATES is returned instead of VK_CONVERT with the ALT modifier.
- As specified in Focus Specification key events are dispatched to the focus owner by default.
WARNING: Aside from those keys that are defined by the Java language (VK_ENTER, VK_BACK_SPACE, and VK_TAB), do not rely on the values of the VK_ constants. Sun reserves the right to change these values as needed to accomodate a wider range of keyboards in the future.
An unspecified behavior will be caused if the id parameter of any particular KeyEvent instance is not in the range from KEY_FIRST to KEY_LAST.
Since:

1.1

See Also:
KeyAdapter, KeyListener, Tutorial: Writing a Key Listener, Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static char`	`CHAR_UNDEFINED` KEY_PRESSED and KEY_RELEASED events which do not map to a valid Unicode character use this for the keyChar value.
`static int`	`KEY_FIRST` The first number in the range of ids used for key events.
`static int`	`KEY_LAST` The last number in the range of ids used for key events.
`static int`	`KEY_LOCATION_LEFT` A constant indicating that the key pressed or released is in the left key location (there is more than one possible location for this key).
`static int`	`KEY_LOCATION_NUMPAD` A constant indicating that the key event originated on the numeric keypad or with a virtual key corresponding to the numeric keypad.
`static int`	`KEY_LOCATION_RIGHT` A constant indicating that the key pressed or released is in the right key location (there is more than one possible location for this key).
`static int`	`KEY_LOCATION_STANDARD` A constant indicating that the key pressed or released is not distinguished as the left or right version of a key, and did not originate on the numeric keypad (or did not originate with a virtual key corresponding to the numeric keypad).
`static int`	`KEY_LOCATION_UNKNOWN` A constant indicating that the keyLocation is indeterminate or not relevant.
`static int`	`KEY_PRESSED` The "key pressed" event.
`static int`	`KEY_RELEASED` The "key released" event.
`static int`	`KEY_TYPED` The "key typed" event.
`static int`	`VK_0` VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39)
`static int`	`VK_1`
`static int`	`VK_2`
`static int`	`VK_3`
`static int`	`VK_4`
`static int`	`VK_5`
`static int`	`VK_6`
`static int`	`VK_7`
`static int`	`VK_8`
`static int`	`VK_9`
`static int`	`VK_A` VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A)
`static int`	`VK_ACCEPT` Constant for the Accept or Commit function key.
`static int`	`VK_ADD`
`static int`	`VK_AGAIN`
`static int`	`VK_ALL_CANDIDATES` Constant for the All Candidates function key.
`static int`	`VK_ALPHANUMERIC` Constant for the Alphanumeric function key.
`static int`	`VK_ALT`
`static int`	`VK_ALT_GRAPH` Constant for the AltGraph function key.
`static int`	`VK_AMPERSAND`
`static int`	`VK_ASTERISK`
`static int`	`VK_AT` Constant for the "@" key.
`static int`	`VK_B`
`static int`	`VK_BACK_QUOTE`
`static int`	`VK_BACK_SLASH` Constant for the back slash key, "\"
`static int`	`VK_BACK_SPACE`
`static int`	`VK_BEGIN` Constant for the Begin key.
`static int`	`VK_BRACELEFT`
`static int`	`VK_BRACERIGHT`
`static int`	`VK_C`
`static int`	`VK_CANCEL`
`static int`	`VK_CAPS_LOCK`
`static int`	`VK_CIRCUMFLEX` Constant for the "^" key.
`static int`	`VK_CLEAR`
`static int`	`VK_CLOSE_BRACKET` Constant for the close bracket key, "]"
`static int`	`VK_CODE_INPUT` Constant for the Code Input function key.
`static int`	`VK_COLON` Constant for the ":" key.
`static int`	`VK_COMMA` Constant for the comma key, ","
`static int`	`VK_COMPOSE` Constant for the Compose function key.
`static int`	`VK_CONTEXT_MENU` Constant for the Microsoft Windows Context Menu key.
`static int`	`VK_CONTROL`
`static int`	`VK_CONVERT` Constant for the Convert function key.
`static int`	`VK_COPY`
`static int`	`VK_CUT`
`static int`	`VK_D`
`static int`	`VK_DEAD_ABOVEDOT`
`static int`	`VK_DEAD_ABOVERING`
`static int`	`VK_DEAD_ACUTE`
`static int`	`VK_DEAD_BREVE`
`static int`	`VK_DEAD_CARON`
`static int`	`VK_DEAD_CEDILLA`
`static int`	`VK_DEAD_CIRCUMFLEX`
`static int`	`VK_DEAD_DIAERESIS`
`static int`	`VK_DEAD_DOUBLEACUTE`
`static int`	`VK_DEAD_GRAVE`
`static int`	`VK_DEAD_IOTA`
`static int`	`VK_DEAD_MACRON`
`static int`	`VK_DEAD_OGONEK`
`static int`	`VK_DEAD_SEMIVOICED_SOUND`
`static int`	`VK_DEAD_TILDE`
`static int`	`VK_DEAD_VOICED_SOUND`
`static int`	`VK_DECIMAL`
`static int`	`VK_DELETE`
`static int`	`VK_DIVIDE`
`static int`	`VK_DOLLAR` Constant for the "$" key.
`static int`	`VK_DOWN` Constant for the non-numpad down arrow key.
`static int`	`VK_E`
`static int`	`VK_END`
`static int`	`VK_ENTER`
`static int`	`VK_EQUALS` Constant for the equals key, "="
`static int`	`VK_ESCAPE`
`static int`	`VK_EURO_SIGN` Constant for the Euro currency sign key.
`static int`	`VK_EXCLAMATION_MARK` Constant for the "!" key.
`static int`	`VK_F`
`static int`	`VK_F1` Constant for the F1 function key.
`static int`	`VK_F10` Constant for the F10 function key.
`static int`	`VK_F11` Constant for the F11 function key.
`static int`	`VK_F12` Constant for the F12 function key.
`static int`	`VK_F13` Constant for the F13 function key.
`static int`	`VK_F14` Constant for the F14 function key.
`static int`	`VK_F15` Constant for the F15 function key.
`static int`	`VK_F16` Constant for the F16 function key.
`static int`	`VK_F17` Constant for the F17 function key.
`static int`	`VK_F18` Constant for the F18 function key.
`static int`	`VK_F19` Constant for the F19 function key.
`static int`	`VK_F2` Constant for the F2 function key.
`static int`	`VK_F20` Constant for the F20 function key.
`static int`	`VK_F21` Constant for the F21 function key.
`static int`	`VK_F22` Constant for the F22 function key.
`static int`	`VK_F23` Constant for the F23 function key.
`static int`	`VK_F24` Constant for the F24 function key.
`static int`	`VK_F3` Constant for the F3 function key.
`static int`	`VK_F4` Constant for the F4 function key.
`static int`	`VK_F5` Constant for the F5 function key.
`static int`	`VK_F6` Constant for the F6 function key.
`static int`	`VK_F7` Constant for the F7 function key.
`static int`	`VK_F8` Constant for the F8 function key.
`static int`	`VK_F9` Constant for the F9 function key.
`static int`	`VK_FINAL`
`static int`	`VK_FIND`
`static int`	`VK_FULL_WIDTH` Constant for the Full-Width Characters function key.
`static int`	`VK_G`
`static int`	`VK_GREATER`
`static int`	`VK_H`
`static int`	`VK_HALF_WIDTH` Constant for the Half-Width Characters function key.
`static int`	`VK_HELP`
`static int`	`VK_HIRAGANA` Constant for the Hiragana function key.
`static int`	`VK_HOME`
`static int`	`VK_I`
`static int`	`VK_INPUT_METHOD_ON_OFF` Constant for the input method on/off key.
`static int`	`VK_INSERT`
`static int`	`VK_INVERTED_EXCLAMATION_MARK` Constant for the inverted exclamation mark key.
`static int`	`VK_J`
`static int`	`VK_JAPANESE_HIRAGANA` Constant for the Japanese-Hiragana function key.
`static int`	`VK_JAPANESE_KATAKANA` Constant for the Japanese-Katakana function key.
`static int`	`VK_JAPANESE_ROMAN` Constant for the Japanese-Roman function key.
`static int`	`VK_K`
`static int`	`VK_KANA`
`static int`	`VK_KANA_LOCK` Constant for the locking Kana function key.
`static int`	`VK_KANJI`
`static int`	`VK_KATAKANA` Constant for the Katakana function key.
`static int`	`VK_KP_DOWN` Constant for the numeric keypad down arrow key.
`static int`	`VK_KP_LEFT` Constant for the numeric keypad left arrow key.
`static int`	`VK_KP_RIGHT` Constant for the numeric keypad right arrow key.
`static int`	`VK_KP_UP` Constant for the numeric keypad up arrow key.
`static int`	`VK_L`
`static int`	`VK_LEFT` Constant for the non-numpad left arrow key.
`static int`	`VK_LEFT_PARENTHESIS` Constant for the "(" key.
`static int`	`VK_LESS`
`static int`	`VK_M`
`static int`	`VK_META`
`static int`	`VK_MINUS` Constant for the minus key, "-"
`static int`	`VK_MODECHANGE`
`static int`	`VK_MULTIPLY`
`static int`	`VK_N`
`static int`	`VK_NONCONVERT` Constant for the Don't Convert function key.
`static int`	`VK_NUM_LOCK`
`static int`	`VK_NUMBER_SIGN` Constant for the "#" key.
`static int`	`VK_NUMPAD0`
`static int`	`VK_NUMPAD1`
`static int`	`VK_NUMPAD2`
`static int`	`VK_NUMPAD3`
`static int`	`VK_NUMPAD4`
`static int`	`VK_NUMPAD5`
`static int`	`VK_NUMPAD6`
`static int`	`VK_NUMPAD7`
`static int`	`VK_NUMPAD8`
`static int`	`VK_NUMPAD9`
`static int`	`VK_O`
`static int`	`VK_OPEN_BRACKET` Constant for the open bracket key, "["
`static int`	`VK_P`
`static int`	`VK_PAGE_DOWN`
`static int`	`VK_PAGE_UP`
`static int`	`VK_PASTE`
`static int`	`VK_PAUSE`
`static int`	`VK_PERIOD` Constant for the period key, "."
`static int`	`VK_PLUS` Constant for the "+" key.
`static int`	`VK_PREVIOUS_CANDIDATE` Constant for the Previous Candidate function key.
`static int`	`VK_PRINTSCREEN`
`static int`	`VK_PROPS`
`static int`	`VK_Q`
`static int`	`VK_QUOTE`
`static int`	`VK_QUOTEDBL`
`static int`	`VK_R`
`static int`	`VK_RIGHT` Constant for the non-numpad right arrow key.
`static int`	`VK_RIGHT_PARENTHESIS` Constant for the ")" key.
`static int`	`VK_ROMAN_CHARACTERS` Constant for the Roman Characters function key.
`static int`	`VK_S`
`static int`	`VK_SCROLL_LOCK`
`static int`	`VK_SEMICOLON` Constant for the semicolon key, ";"
`static int`	`VK_SEPARATER` This constant is obsolete, and is included only for backwards compatibility.
`static int`	`VK_SEPARATOR` Constant for the Numpad Separator key.
`static int`	`VK_SHIFT`
`static int`	`VK_SLASH` Constant for the forward slash key, "/"
`static int`	`VK_SPACE`
`static int`	`VK_STOP`
`static int`	`VK_SUBTRACT`
`static int`	`VK_T`
`static int`	`VK_TAB`
`static int`	`VK_U`
`static int`	`VK_UNDEFINED` This value is used to indicate that the keyCode is unknown.
`static int`	`VK_UNDERSCORE` Constant for the "_" key.
`static int`	`VK_UNDO`
`static int`	`VK_UP` Constant for the non-numpad up arrow key.
`static int`	`VK_V`
`static int`	`VK_W`
`static int`	`VK_WINDOWS` Constant for the Microsoft Windows "Windows" key.
`static int`	`VK_X`
`static int`	`VK_Y`
`static int`	`VK_Z`

Fields inherited from class java.awt.event.InputEvent
ALT_DOWN_MASK, ALT_GRAPH_DOWN_MASK, ALT_GRAPH_MASK, ALT_MASK, BUTTON1_DOWN_MASK, BUTTON1_MASK, BUTTON2_DOWN_MASK, BUTTON2_MASK, BUTTON3_DOWN_MASK, BUTTON3_MASK, CTRL_DOWN_MASK, CTRL_MASK, META_DOWN_MASK, META_MASK, SHIFT_DOWN_MASK, SHIFT_MASK

Fields inherited from class java.awt.event.ComponentEvent
COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

Fields inherited from class java.util.EventObject
source

Constructor Summary

Constructors
Constructor and Description
`KeyEvent(Component source, int id, long when, int modifiers, int keyCode)` Deprecated. as of JDK1.1
`KeyEvent(Component source, int id, long when, int modifiers, int keyCode, char keyChar)` Constructs a `KeyEvent` object.
`KeyEvent(Component source, int id, long when, int modifiers, int keyCode, char keyChar, int keyLocation)` Constructs a `KeyEvent` object.

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getExtendedKeyCode()` Returns an extended key code for the event.
`static int`	`getExtendedKeyCodeForChar(int c)` Returns an extended key code for a unicode character.
`char`	`getKeyChar()` Returns the character associated with the key in this event.
`int`	`getKeyCode()` Returns the integer keyCode associated with the key in this event.
`int`	`getKeyLocation()` Returns the location of the key that originated this key event.
`static String`	`getKeyModifiersText(int modifiers)` Returns a `String` describing the modifier key(s), such as "Shift", or "Ctrl+Shift".
`static String`	`getKeyText(int keyCode)` Returns a String describing the keyCode, such as "HOME", "F1" or "A".
`boolean`	`isActionKey()` Returns whether the key in this event is an "action" key.
`String`	`paramString()` Returns a parameter string identifying this event.
`void`	`setKeyChar(char keyChar)` Set the keyChar value to indicate a logical character.
`void`	`setKeyCode(int keyCode)` Set the keyCode value to indicate a physical key.
`void`	`setModifiers(int modifiers)` Deprecated. as of JDK1.1.4

Methods inherited from class java.awt.event.InputEvent
consume, getMaskForButton, getModifiers, getModifiersEx, getModifiersExText, getWhen, isAltDown, isAltGraphDown, isConsumed, isControlDown, isMetaDown, isShiftDown

Methods inherited from class java.awt.event.ComponentEvent
getComponent

Methods inherited from class java.awt.AWTEvent
getID, setSource, toString

Methods inherited from class java.util.EventObject
getSource

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

- Field Detail
  - KEY_FIRST
```
public static final int KEY_FIRST
```
    The first number in the range of ids used for key events.
    
    See Also:
    Constant Field Values
  - KEY_LAST
```
public static final int KEY_LAST
```
    The last number in the range of ids used for key events.
    
    See Also:
    Constant Field Values
  - KEY_TYPED
```
public static final int KEY_TYPED
```
    The "key typed" event. This event is generated when a character is entered. In the simplest case, it is produced by a single key press. Often, however, characters are produced by series of key presses, and the mapping from key pressed events to key typed events may be many-to-one or many-to-many.
    
    See Also:
    Constant Field Values
  - KEY_PRESSED
```
public static final int KEY_PRESSED
```
    The "key pressed" event. This event is generated when a key is pushed down.
    
    See Also:
    Constant Field Values
  - KEY_RELEASED
```
public static final int KEY_RELEASED
```
    The "key released" event. This event is generated when a key is let up.
    
    See Also:
    Constant Field Values
  - VK_ENTER
```
public static final int VK_ENTER
```
    See Also:
    Constant Field Values
  - VK_BACK_SPACE
```
public static final int VK_BACK_SPACE
```
    See Also:
    Constant Field Values
  - VK_TAB
```
public static final int VK_TAB
```
    See Also:
    Constant Field Values
  - VK_CANCEL
```
public static final int VK_CANCEL
```
    See Also:
    Constant Field Values
  - VK_CLEAR
```
public static final int VK_CLEAR
```
    See Also:
    Constant Field Values
  - VK_SHIFT
```
public static final int VK_SHIFT
```
    See Also:
    Constant Field Values
  - VK_CONTROL
```
public static final int VK_CONTROL
```
    See Also:
    Constant Field Values
  - VK_ALT
```
public static final int VK_ALT
```
    See Also:
    Constant Field Values
  - VK_PAUSE
```
public static final int VK_PAUSE
```
    See Also:
    Constant Field Values
  - VK_CAPS_LOCK
```
public static final int VK_CAPS_LOCK
```
    See Also:
    Constant Field Values
  - VK_ESCAPE
```
public static final int VK_ESCAPE
```
    See Also:
    Constant Field Values
  - VK_SPACE
```
public static final int VK_SPACE
```
    See Also:
    Constant Field Values
  - VK_PAGE_UP
```
public static final int VK_PAGE_UP
```
    See Also:
    Constant Field Values
  - VK_PAGE_DOWN
```
public static final int VK_PAGE_DOWN
```
    See Also:
    Constant Field Values
  - VK_END
```
public static final int VK_END
```
    See Also:
    Constant Field Values
  - VK_HOME
```
public static final int VK_HOME
```
    See Also:
    Constant Field Values
  - VK_LEFT
```
public static final int VK_LEFT
```
    Constant for the non-numpad left arrow key.
    
    See Also:
    VK_KP_LEFT, Constant Field Values
  - VK_UP
```
public static final int VK_UP
```
    Constant for the non-numpad up arrow key.
    
    See Also:
    VK_KP_UP, Constant Field Values
  - VK_RIGHT
```
public static final int VK_RIGHT
```
    Constant for the non-numpad right arrow key.
    
    See Also:
    VK_KP_RIGHT, Constant Field Values
  - VK_DOWN
```
public static final int VK_DOWN
```
    Constant for the non-numpad down arrow key.
    
    See Also:
    VK_KP_DOWN, Constant Field Values
  - VK_COMMA
```
public static final int VK_COMMA
```
    Constant for the comma key, ","
    
    See Also:
    Constant Field Values
  - VK_MINUS
```
public static final int VK_MINUS
```
    Constant for the minus key, "-"
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PERIOD
```
public static final int VK_PERIOD
```
    Constant for the period key, "."
    
    See Also:
    Constant Field Values
  - VK_SLASH
```
public static final int VK_SLASH
```
    Constant for the forward slash key, "/"
    
    See Also:
    Constant Field Values
  - VK_0
```
public static final int VK_0
```
    VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39)
    
    See Also:
    Constant Field Values
  - VK_1
```
public static final int VK_1
```
    See Also:
    Constant Field Values
  - VK_2
```
public static final int VK_2
```
    See Also:
    Constant Field Values
  - VK_3
```
public static final int VK_3
```
    See Also:
    Constant Field Values
  - VK_4
```
public static final int VK_4
```
    See Also:
    Constant Field Values
  - VK_5
```
public static final int VK_5
```
    See Also:
    Constant Field Values
  - VK_6
```
public static final int VK_6
```
    See Also:
    Constant Field Values
  - VK_7
```
public static final int VK_7
```
    See Also:
    Constant Field Values
  - VK_8
```
public static final int VK_8
```
    See Also:
    Constant Field Values
  - VK_9
```
public static final int VK_9
```
    See Also:
    Constant Field Values
  - VK_SEMICOLON
```
public static final int VK_SEMICOLON
```
    Constant for the semicolon key, ";"
    
    See Also:
    Constant Field Values
  - VK_EQUALS
```
public static final int VK_EQUALS
```
    Constant for the equals key, "="
    
    See Also:
    Constant Field Values
  - VK_A
```
public static final int VK_A
```
    VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A)
    
    See Also:
    Constant Field Values
  - VK_B
```
public static final int VK_B
```
    See Also:
    Constant Field Values
  - VK_C
```
public static final int VK_C
```
    See Also:
    Constant Field Values
  - VK_D
```
public static final int VK_D
```
    See Also:
    Constant Field Values
  - VK_E
```
public static final int VK_E
```
    See Also:
    Constant Field Values
  - VK_F
```
public static final int VK_F
```
    See Also:
    Constant Field Values
  - VK_G
```
public static final int VK_G
```
    See Also:
    Constant Field Values
  - VK_H
```
public static final int VK_H
```
    See Also:
    Constant Field Values
  - VK_I
```
public static final int VK_I
```
    See Also:
    Constant Field Values
  - VK_J
```
public static final int VK_J
```
    See Also:
    Constant Field Values
  - VK_K
```
public static final int VK_K
```
    See Also:
    Constant Field Values
  - VK_L
```
public static final int VK_L
```
    See Also:
    Constant Field Values
  - VK_M
```
public static final int VK_M
```
    See Also:
    Constant Field Values
  - VK_N
```
public static final int VK_N
```
    See Also:
    Constant Field Values
  - VK_O
```
public static final int VK_O
```
    See Also:
    Constant Field Values
  - VK_P
```
public static final int VK_P
```
    See Also:
    Constant Field Values
  - VK_Q
```
public static final int VK_Q
```
    See Also:
    Constant Field Values
  - VK_R
```
public static final int VK_R
```
    See Also:
    Constant Field Values
  - VK_S
```
public static final int VK_S
```
    See Also:
    Constant Field Values
  - VK_T
```
public static final int VK_T
```
    See Also:
    Constant Field Values
  - VK_U
```
public static final int VK_U
```
    See Also:
    Constant Field Values
  - VK_V
```
public static final int VK_V
```
    See Also:
    Constant Field Values
  - VK_W
```
public static final int VK_W
```
    See Also:
    Constant Field Values
  - VK_X
```
public static final int VK_X
```
    See Also:
    Constant Field Values
  - VK_Y
```
public static final int VK_Y
```
    See Also:
    Constant Field Values
  - VK_Z
```
public static final int VK_Z
```
    See Also:
    Constant Field Values
  - VK_OPEN_BRACKET
```
public static final int VK_OPEN_BRACKET
```
    Constant for the open bracket key, "["
    
    See Also:
    Constant Field Values
  - VK_BACK_SLASH
```
public static final int VK_BACK_SLASH
```
    Constant for the back slash key, "\"
    
    See Also:
    Constant Field Values
  - VK_CLOSE_BRACKET
```
public static final int VK_CLOSE_BRACKET
```
    Constant for the close bracket key, "]"
    
    See Also:
    Constant Field Values
  - VK_NUMPAD0
```
public static final int VK_NUMPAD0
```
    See Also:
    Constant Field Values
  - VK_NUMPAD1
```
public static final int VK_NUMPAD1
```
    See Also:
    Constant Field Values
  - VK_NUMPAD2
```
public static final int VK_NUMPAD2
```
    See Also:
    Constant Field Values
  - VK_NUMPAD3
```
public static final int VK_NUMPAD3
```
    See Also:
    Constant Field Values
  - VK_NUMPAD4
```
public static final int VK_NUMPAD4
```
    See Also:
    Constant Field Values
  - VK_NUMPAD5
```
public static final int VK_NUMPAD5
```
    See Also:
    Constant Field Values
  - VK_NUMPAD6
```
public static final int VK_NUMPAD6
```
    See Also:
    Constant Field Values
  - VK_NUMPAD7
```
public static final int VK_NUMPAD7
```
    See Also:
    Constant Field Values
  - VK_NUMPAD8
```
public static final int VK_NUMPAD8
```
    See Also:
    Constant Field Values
  - VK_NUMPAD9
```
public static final int VK_NUMPAD9
```
    See Also:
    Constant Field Values
  - VK_MULTIPLY
```
public static final int VK_MULTIPLY
```
    See Also:
    Constant Field Values
  - VK_ADD
```
public static final int VK_ADD
```
    See Also:
    Constant Field Values
  - VK_SEPARATER
```
public static final int VK_SEPARATER
```
    This constant is obsolete, and is included only for backwards compatibility.
    
    See Also:
    VK_SEPARATOR, Constant Field Values
  - VK_SEPARATOR
```
public static final int VK_SEPARATOR
```
    Constant for the Numpad Separator key.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - VK_SUBTRACT
```
public static final int VK_SUBTRACT
```
    See Also:
    Constant Field Values
  - VK_DECIMAL
```
public static final int VK_DECIMAL
```
    See Also:
    Constant Field Values
  - VK_DIVIDE
```
public static final int VK_DIVIDE
```
    See Also:
    Constant Field Values
  - VK_DELETE
```
public static final int VK_DELETE
```
    See Also:
    Constant Field Values
  - VK_NUM_LOCK
```
public static final int VK_NUM_LOCK
```
    See Also:
    Constant Field Values
  - VK_SCROLL_LOCK
```
public static final int VK_SCROLL_LOCK
```
    See Also:
    Constant Field Values
  - VK_F1
```
public static final int VK_F1
```
    Constant for the F1 function key.
    
    See Also:
    Constant Field Values
  - VK_F2
```
public static final int VK_F2
```
    Constant for the F2 function key.
    
    See Also:
    Constant Field Values
  - VK_F3
```
public static final int VK_F3
```
    Constant for the F3 function key.
    
    See Also:
    Constant Field Values
  - VK_F4
```
public static final int VK_F4
```
    Constant for the F4 function key.
    
    See Also:
    Constant Field Values
  - VK_F5
```
public static final int VK_F5
```
    Constant for the F5 function key.
    
    See Also:
    Constant Field Values
  - VK_F6
```
public static final int VK_F6
```
    Constant for the F6 function key.
    
    See Also:
    Constant Field Values
  - VK_F7
```
public static final int VK_F7
```
    Constant for the F7 function key.
    
    See Also:
    Constant Field Values
  - VK_F8
```
public static final int VK_F8
```
    Constant for the F8 function key.
    
    See Also:
    Constant Field Values
  - VK_F9
```
public static final int VK_F9
```
    Constant for the F9 function key.
    
    See Also:
    Constant Field Values
  - VK_F10
```
public static final int VK_F10
```
    Constant for the F10 function key.
    
    See Also:
    Constant Field Values
  - VK_F11
```
public static final int VK_F11
```
    Constant for the F11 function key.
    
    See Also:
    Constant Field Values
  - VK_F12
```
public static final int VK_F12
```
    Constant for the F12 function key.
    
    See Also:
    Constant Field Values
  - VK_F13
```
public static final int VK_F13
```
    Constant for the F13 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F14
```
public static final int VK_F14
```
    Constant for the F14 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F15
```
public static final int VK_F15
```
    Constant for the F15 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F16
```
public static final int VK_F16
```
    Constant for the F16 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F17
```
public static final int VK_F17
```
    Constant for the F17 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F18
```
public static final int VK_F18
```
    Constant for the F18 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F19
```
public static final int VK_F19
```
    Constant for the F19 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F20
```
public static final int VK_F20
```
    Constant for the F20 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F21
```
public static final int VK_F21
```
    Constant for the F21 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F22
```
public static final int VK_F22
```
    Constant for the F22 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F23
```
public static final int VK_F23
```
    Constant for the F23 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_F24
```
public static final int VK_F24
```
    Constant for the F24 function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PRINTSCREEN
```
public static final int VK_PRINTSCREEN
```
    See Also:
    Constant Field Values
  - VK_INSERT
```
public static final int VK_INSERT
```
    See Also:
    Constant Field Values
  - VK_HELP
```
public static final int VK_HELP
```
    See Also:
    Constant Field Values
  - VK_META
```
public static final int VK_META
```
    See Also:
    Constant Field Values
  - VK_BACK_QUOTE
```
public static final int VK_BACK_QUOTE
```
    See Also:
    Constant Field Values
  - VK_QUOTE
```
public static final int VK_QUOTE
```
    See Also:
    Constant Field Values
  - VK_KP_UP
```
public static final int VK_KP_UP
```
    Constant for the numeric keypad up arrow key.
    
    Since:
    
    1.2
    
    See Also:
    VK_UP, Constant Field Values
  - VK_KP_DOWN
```
public static final int VK_KP_DOWN
```
    Constant for the numeric keypad down arrow key.
    
    Since:
    
    1.2
    
    See Also:
    VK_DOWN, Constant Field Values
  - VK_KP_LEFT
```
public static final int VK_KP_LEFT
```
    Constant for the numeric keypad left arrow key.
    
    Since:
    
    1.2
    
    See Also:
    VK_LEFT, Constant Field Values
  - VK_KP_RIGHT
```
public static final int VK_KP_RIGHT
```
    Constant for the numeric keypad right arrow key.
    
    Since:
    
    1.2
    
    See Also:
    VK_RIGHT, Constant Field Values
  - VK_DEAD_GRAVE
```
public static final int VK_DEAD_GRAVE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_ACUTE
```
public static final int VK_DEAD_ACUTE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_CIRCUMFLEX
```
public static final int VK_DEAD_CIRCUMFLEX
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_TILDE
```
public static final int VK_DEAD_TILDE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_MACRON
```
public static final int VK_DEAD_MACRON
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_BREVE
```
public static final int VK_DEAD_BREVE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_ABOVEDOT
```
public static final int VK_DEAD_ABOVEDOT
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_DIAERESIS
```
public static final int VK_DEAD_DIAERESIS
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_ABOVERING
```
public static final int VK_DEAD_ABOVERING
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_DOUBLEACUTE
```
public static final int VK_DEAD_DOUBLEACUTE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_CARON
```
public static final int VK_DEAD_CARON
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_CEDILLA
```
public static final int VK_DEAD_CEDILLA
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_OGONEK
```
public static final int VK_DEAD_OGONEK
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_IOTA
```
public static final int VK_DEAD_IOTA
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_VOICED_SOUND
```
public static final int VK_DEAD_VOICED_SOUND
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DEAD_SEMIVOICED_SOUND
```
public static final int VK_DEAD_SEMIVOICED_SOUND
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_AMPERSAND
```
public static final int VK_AMPERSAND
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_ASTERISK
```
public static final int VK_ASTERISK
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_QUOTEDBL
```
public static final int VK_QUOTEDBL
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_LESS
```
public static final int VK_LESS
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_GREATER
```
public static final int VK_GREATER
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_BRACELEFT
```
public static final int VK_BRACELEFT
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_BRACERIGHT
```
public static final int VK_BRACERIGHT
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_AT
```
public static final int VK_AT
```
    Constant for the "@" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_COLON
```
public static final int VK_COLON
```
    Constant for the ":" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_CIRCUMFLEX
```
public static final int VK_CIRCUMFLEX
```
    Constant for the "^" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_DOLLAR
```
public static final int VK_DOLLAR
```
    Constant for the "$" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_EURO_SIGN
```
public static final int VK_EURO_SIGN
```
    Constant for the Euro currency sign key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_EXCLAMATION_MARK
```
public static final int VK_EXCLAMATION_MARK
```
    Constant for the "!" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_INVERTED_EXCLAMATION_MARK
```
public static final int VK_INVERTED_EXCLAMATION_MARK
```
    Constant for the inverted exclamation mark key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_LEFT_PARENTHESIS
```
public static final int VK_LEFT_PARENTHESIS
```
    Constant for the "(" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_NUMBER_SIGN
```
public static final int VK_NUMBER_SIGN
```
    Constant for the "#" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PLUS
```
public static final int VK_PLUS
```
    Constant for the "+" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_RIGHT_PARENTHESIS
```
public static final int VK_RIGHT_PARENTHESIS
```
    Constant for the ")" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_UNDERSCORE
```
public static final int VK_UNDERSCORE
```
    Constant for the "_" key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_WINDOWS
```
public static final int VK_WINDOWS
```
    Constant for the Microsoft Windows "Windows" key. It is used for both the left and right version of the key.
    
    Since:
    
    1.5
    
    See Also:
    getKeyLocation(), Constant Field Values
  - VK_CONTEXT_MENU
```
public static final int VK_CONTEXT_MENU
```
    Constant for the Microsoft Windows Context Menu key.
    
    Since:
    
    1.5
    
    See Also:
    Constant Field Values
  - VK_FINAL
```
public static final int VK_FINAL
```
    See Also:
    Constant Field Values
  - VK_CONVERT
```
public static final int VK_CONVERT
```
    Constant for the Convert function key.
    
    See Also:
    Constant Field Values
  - VK_NONCONVERT
```
public static final int VK_NONCONVERT
```
    Constant for the Don't Convert function key.
    
    See Also:
    Constant Field Values
  - VK_ACCEPT
```
public static final int VK_ACCEPT
```
    Constant for the Accept or Commit function key.
    
    See Also:
    Constant Field Values
  - VK_MODECHANGE
```
public static final int VK_MODECHANGE
```
    See Also:
    Constant Field Values
  - VK_KANA
```
public static final int VK_KANA
```
    See Also:
    Constant Field Values
  - VK_KANJI
```
public static final int VK_KANJI
```
    See Also:
    Constant Field Values
  - VK_ALPHANUMERIC
```
public static final int VK_ALPHANUMERIC
```
    Constant for the Alphanumeric function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_KATAKANA
```
public static final int VK_KATAKANA
```
    Constant for the Katakana function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_HIRAGANA
```
public static final int VK_HIRAGANA
```
    Constant for the Hiragana function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_FULL_WIDTH
```
public static final int VK_FULL_WIDTH
```
    Constant for the Full-Width Characters function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_HALF_WIDTH
```
public static final int VK_HALF_WIDTH
```
    Constant for the Half-Width Characters function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_ROMAN_CHARACTERS
```
public static final int VK_ROMAN_CHARACTERS
```
    Constant for the Roman Characters function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_ALL_CANDIDATES
```
public static final int VK_ALL_CANDIDATES
```
    Constant for the All Candidates function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PREVIOUS_CANDIDATE
```
public static final int VK_PREVIOUS_CANDIDATE
```
    Constant for the Previous Candidate function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_CODE_INPUT
```
public static final int VK_CODE_INPUT
```
    Constant for the Code Input function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_JAPANESE_KATAKANA
```
public static final int VK_JAPANESE_KATAKANA
```
    Constant for the Japanese-Katakana function key. This key switches to a Japanese input method and selects its Katakana input mode.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_JAPANESE_HIRAGANA
```
public static final int VK_JAPANESE_HIRAGANA
```
    Constant for the Japanese-Hiragana function key. This key switches to a Japanese input method and selects its Hiragana input mode.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_JAPANESE_ROMAN
```
public static final int VK_JAPANESE_ROMAN
```
    Constant for the Japanese-Roman function key. This key switches to a Japanese input method and selects its Roman-Direct input mode.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_KANA_LOCK
```
public static final int VK_KANA_LOCK
```
    Constant for the locking Kana function key. This key locks the keyboard into a Kana layout.
    
    Since:
    
    1.3
    
    See Also:
    Constant Field Values
  - VK_INPUT_METHOD_ON_OFF
```
public static final int VK_INPUT_METHOD_ON_OFF
```
    Constant for the input method on/off key.
    
    Since:
    
    1.3
    
    See Also:
    Constant Field Values
  - VK_CUT
```
public static final int VK_CUT
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_COPY
```
public static final int VK_COPY
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PASTE
```
public static final int VK_PASTE
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_UNDO
```
public static final int VK_UNDO
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_AGAIN
```
public static final int VK_AGAIN
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_FIND
```
public static final int VK_FIND
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_PROPS
```
public static final int VK_PROPS
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_STOP
```
public static final int VK_STOP
```
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_COMPOSE
```
public static final int VK_COMPOSE
```
    Constant for the Compose function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_ALT_GRAPH
```
public static final int VK_ALT_GRAPH
```
    Constant for the AltGraph function key.
    
    Since:
    
    1.2
    
    See Also:
    Constant Field Values
  - VK_BEGIN
```
public static final int VK_BEGIN
```
    Constant for the Begin key.
    
    Since:
    
    1.5
    
    See Also:
    Constant Field Values
  - VK_UNDEFINED
```
public static final int VK_UNDEFINED
```
    This value is used to indicate that the keyCode is unknown. KEY_TYPED events do not have a keyCode value; this value is used instead.
    
    See Also:
    Constant Field Values
  - CHAR_UNDEFINED
```
public static final char CHAR_UNDEFINED
```
    KEY_PRESSED and KEY_RELEASED events which do not map to a valid Unicode character use this for the keyChar value.
    
    See Also:
    Constant Field Values
  - KEY_LOCATION_UNKNOWN
```
public static final int KEY_LOCATION_UNKNOWN
```
    A constant indicating that the keyLocation is indeterminate or not relevant. KEY_TYPED events do not have a keyLocation; this value is used instead.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - KEY_LOCATION_STANDARD
```
public static final int KEY_LOCATION_STANDARD
```
    A constant indicating that the key pressed or released is not distinguished as the left or right version of a key, and did not originate on the numeric keypad (or did not originate with a virtual key corresponding to the numeric keypad).
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - KEY_LOCATION_LEFT
```
public static final int KEY_LOCATION_LEFT
```
    A constant indicating that the key pressed or released is in the left key location (there is more than one possible location for this key). Example: the left shift key.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - KEY_LOCATION_RIGHT
```
public static final int KEY_LOCATION_RIGHT
```
    A constant indicating that the key pressed or released is in the right key location (there is more than one possible location for this key). Example: the right shift key.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - KEY_LOCATION_NUMPAD
```
public static final int KEY_LOCATION_NUMPAD
```
    A constant indicating that the key event originated on the numeric keypad or with a virtual key corresponding to the numeric keypad.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
- Constructor Detail
  - KeyEvent
```
public KeyEvent(Component source,
        int id,
        long when,
        int modifiers,
        int keyCode,
        char keyChar,
        int keyLocation)
```
    Constructs a KeyEvent object.
    This method throws an IllegalArgumentException if source is null.
    
    Parameters:
    source - The Component that originated the event
    id - An integer indicating the type of event. For information on allowable values, see the class description for KeyEvent
    when - A long integer that specifies the time the event occurred. Passing negative or zero value is not recommended
    modifiers - The modifier keys down during event (shift, ctrl, alt, meta). Passing negative value is not recommended. Zero value means that no modifiers were passed. Use either an extended _DOWN_MASK or old _MASK modifiers, however do not mix models in the one event. The extended modifiers are preferred for using
    keyCode - The integer code for an actual key, or VK_UNDEFINED (for a key-typed event)
    keyChar - The Unicode character generated by this event, or CHAR_UNDEFINED (for key-pressed and key-released events which do not map to a valid Unicode character)
    keyLocation - Identifies the key location. The only legal values are KEY_LOCATION_UNKNOWN, KEY_LOCATION_STANDARD, KEY_LOCATION_LEFT, KEY_LOCATION_RIGHT, and KEY_LOCATION_NUMPAD.
    
    Throws:
    
    IllegalArgumentException - if id is KEY_TYPED and keyChar is CHAR_UNDEFINED; or if id is KEY_TYPED and keyCode is not VK_UNDEFINED; or if id is KEY_TYPED and keyLocation is not KEY_LOCATION_UNKNOWN; or if keyLocation is not one of the legal values enumerated above.
    
    IllegalArgumentException - if source is null
    Since:
    
    1.4
    
    See Also:
    EventObject.getSource(), AWTEvent.getID(), InputEvent.getWhen(), InputEvent.getModifiers(), getKeyCode(), getKeyChar(), getKeyLocation()
  - KeyEvent
```
public KeyEvent(Component source,
        int id,
        long when,
        int modifiers,
        int keyCode,
        char keyChar)
```
    Constructs a KeyEvent object.
    This method throws an IllegalArgumentException if source is null.
    
    Parameters:
    source - The Component that originated the event
    id - An integer indicating the type of event. For information on allowable values, see the class description for KeyEvent
    when - A long integer that specifies the time the event occurred. Passing negative or zero value is not recommended
    modifiers - The modifier keys down during event (shift, ctrl, alt, meta). Passing negative value is not recommended. Zero value means that no modifiers were passed. Use either an extended _DOWN_MASK or old _MASK modifiers, however do not mix models in the one event. The extended modifiers are preferred for using
    keyCode - The integer code for an actual key, or VK_UNDEFINED (for a key-typed event)
    keyChar - The Unicode character generated by this event, or CHAR_UNDEFINED (for key-pressed and key-released events which do not map to a valid Unicode character)
    
    Throws:
    
    IllegalArgumentException - if id is KEY_TYPED and keyChar is CHAR_UNDEFINED; or if id is KEY_TYPED and keyCode is not VK_UNDEFINED
    
    IllegalArgumentException - if source is null
    See Also:
    EventObject.getSource(), AWTEvent.getID(), InputEvent.getWhen(), InputEvent.getModifiers(), getKeyCode(), getKeyChar()
  - KeyEvent
```
@Deprecated
public KeyEvent(Component source,
                   int id,
                   long when,
                   int modifiers,
                   int keyCode)
```
    Deprecated. as of JDK1.1
- Method Detail
  - getKeyCode
```
public int getKeyCode()
```
    Returns the integer keyCode associated with the key in this event.
    
    Returns:
    the integer code for an actual key on the keyboard. (For KEY_TYPED events, the keyCode is VK_UNDEFINED.)
  - setKeyCode
```
public void setKeyCode(int keyCode)
```
    Set the keyCode value to indicate a physical key.
    
    Parameters:
    keyCode - an integer corresponding to an actual key on the keyboard.
  - getKeyChar
```
public char getKeyChar()
```
    Returns the character associated with the key in this event. For example, the KEY_TYPED event for shift + "a" returns the value for "A".
    KEY_PRESSED and KEY_RELEASED events are not intended for reporting of character input. Therefore, the values returned by this method are guaranteed to be meaningful only for KEY_TYPED events.
    
    Returns:
    the Unicode character defined for this key event. If no valid Unicode character exists for this key event, CHAR_UNDEFINED is returned.
  - setKeyChar
```
public void setKeyChar(char keyChar)
```
    Set the keyChar value to indicate a logical character.
    
    Parameters:
    keyChar - a char corresponding to to the combination of keystrokes that make up this event.
  - setModifiers
```
@Deprecated
public void setModifiers(int modifiers)
```
    Deprecated. as of JDK1.1.4
    
    Set the modifiers to indicate additional keys that were held down (e.g. shift, ctrl, alt, meta) defined as part of InputEvent.
    NOTE: use of this method is not recommended, because many AWT implementations do not recognize modifier changes. This is especially true for KEY_TYPED events where the shift modifier is changed.
    
    Parameters:
    modifiers - an integer combination of the modifier constants.
    See Also:
    InputEvent
  - getKeyLocation
```
public int getKeyLocation()
```
    Returns the location of the key that originated this key event. Some keys occur more than once on a keyboard, e.g. the left and right shift keys. Additionally, some keys occur on the numeric keypad. This provides a way of distinguishing such keys.
    
    Returns:
    the location of the key that was pressed or released. Always returns KEY_LOCATION_UNKNOWN for KEY_TYPED events.
    Since:
    
    1.4
  - getKeyText
```
public static String getKeyText(int keyCode)
```
    Returns a String describing the keyCode, such as "HOME", "F1" or "A". These strings can be localized by changing the awt.properties file.
    
    Returns:
    a string containing a text description for a physical key, identified by its keyCode
  - getKeyModifiersText
```
public static String getKeyModifiersText(int modifiers)
```
    Returns a String describing the modifier key(s), such as "Shift", or "Ctrl+Shift". These strings can be localized by changing the awt.properties file.
    Note that InputEvent.ALT_MASK and InputEvent.BUTTON2_MASK have the same value, so the string "Alt" is returned for both modifiers. Likewise, InputEvent.META_MASK and InputEvent.BUTTON3_MASK have the same value, so the string "Meta" is returned for both modifiers.
    
    Returns:
    string a text description of the combination of modifier keys that were held down during the event
    See Also:
    InputEvent.getModifiersExText(int)
  - isActionKey
```
public boolean isActionKey()
```
    Returns whether the key in this event is an "action" key. Typically an action key does not fire a unicode character and is not a modifier key.
    
    Returns:
    true if the key is an "action" key, false otherwise
  - paramString
```
public String paramString()
```
    Returns a parameter string identifying this event. This method is useful for event logging and for debugging.
    
    Overrides:
    
    paramString in class ComponentEvent
    
    Returns:
    a string identifying the event and its attributes
  - getExtendedKeyCode
```
public int getExtendedKeyCode()
```
    Returns an extended key code for the event. The extended key code is a unique id assigned to a key on the keyboard just like keyCode. However, unlike keyCode, this value depends on the current keyboard layout. For instance, pressing the left topmost letter key in a common English layout produces the same value as keyCode, VK_Q. Pressing the same key in a regular Russian layout gives another code, unique for the letter "Cyrillic I short".
    
    Since:
    
    1.7
  - getExtendedKeyCodeForChar
```
public static int getExtendedKeyCodeForChar(int c)
```
    Returns an extended key code for a unicode character.
    
    Returns:
    for a unicode character with a corresponding VK_ constant -- this VK_ constant; for a character appearing on the primary level of a known keyboard layout -- a unique integer. If a character does not appear on the primary level of a known keyboard, VK_UNDEFINED is returned.
    Since:
    
    1.7

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Class KeyEvent

Field Summary

Fields inherited from class java.awt.event.InputEvent

Fields inherited from class java.awt.event.ComponentEvent

Fields inherited from class java.awt.AWTEvent

Fields inherited from class java.util.EventObject

Constructor Summary

Method Summary

Methods inherited from class java.awt.event.InputEvent

Methods inherited from class java.awt.event.ComponentEvent

Methods inherited from class java.awt.AWTEvent

Methods inherited from class java.util.EventObject

Methods inherited from class java.lang.Object

Field Detail

KEY_FIRST

KEY_LAST

KEY_TYPED

KEY_PRESSED

KEY_RELEASED

VK_ENTER

VK_BACK_SPACE

VK_TAB

VK_CANCEL

VK_CLEAR

VK_SHIFT

VK_CONTROL

VK_ALT

VK_PAUSE

VK_CAPS_LOCK

VK_ESCAPE

VK_SPACE

VK_PAGE_UP

VK_PAGE_DOWN

VK_END

VK_HOME

VK_LEFT

VK_UP

VK_RIGHT

VK_DOWN

VK_COMMA

VK_MINUS

VK_PERIOD

VK_SLASH

VK_0

VK_1

VK_2

VK_3

VK_4

VK_5

VK_6

VK_7

VK_8

VK_9

VK_SEMICOLON

VK_EQUALS

VK_A

VK_B

VK_C

VK_D

VK_E

VK_F

VK_G

VK_H

VK_I

VK_J

VK_K

VK_L

VK_M

VK_N

VK_O

VK_P

VK_Q

VK_R

VK_S

VK_T

VK_U

VK_V

VK_W

VK_X

VK_Y