KeyEvent (Sample Document)

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

All Implemented Interfaces:

java.io.Serializable

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

Static Method Summary

Static Methods
Modifier and Type	Static Method and Description
`static int`	`getExtendedKeyCodeForChar(int c)` Returns an extended key code for a unicode character.
`static java.lang.String`	`getKeyModifiersText(int modifiers)` Returns a `String` describing the modifier key(s), such as "Shift", or "Ctrl+Shift".
`static java.lang.String`	`getKeyText(int keyCode)` Returns a String describing the keyCode, such as "HOME", "F1" or "A".

Static methods inherited from class java.awt.event.InputEvent
getMaskForButton, getModifiersExText

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.
`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.
`boolean`	`isActionKey()` Returns whether the key in this event is an "action" key.
`java.lang.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, getModifiers, getModifiersEx, 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:
    
    java.lang.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.
    
    java.lang.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:
    
    java.lang.IllegalArgumentException - if id is KEY_TYPED and keyChar is CHAR_UNDEFINED; or if id is KEY_TYPED and keyCode is not VK_UNDEFINED
    
    java.lang.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
  - 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 java.lang.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
- Static Method Detail
  - getKeyText
    
    public static java.lang.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 java.lang.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)
  - 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

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

Static Method Summary

Static methods inherited from class java.awt.event.InputEvent

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