SWING - KeyEvent Class

On entering the character the Key event is generated.There are three types of key events which are represented by the integer constants.
KEY_PRESSED
KEY_RELASED
KEY_TYPED
Following is the declaration for java.awt.event.KeyEvent class −
public class KeyEvent
   extends InputEvent

Following are the fields for java.awt.InputEvent class −
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 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_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_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_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_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_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_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_LOCATION_UNKNOWN − A constant indicating that the keyLocation is indeterminate or not relevant.
static int KEY_PRESSED − The "key pressed" event.
static int KEY_PRESSED − The "key pressed" event.
static int KEY_RELEASED − The "key released" event.
static int KEY_RELEASED − The "key released" event.
static int KEY_TYPED − The "key typed" 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' (0×30 - 0×39)
static int VK_0 − VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0×30 - 0×39)
static int VK_1
static int VK_1
static int VK_2
static int VK_2
static int VK_3
static int VK_3
static int VK_4
static int VK_4
static int VK_5
static int VK_5
static int VK_6
static int VK_6
static int VK_7
static int VK_7
static int VK_8
static int VK_8
static int VK_9
static int VK_9
static int VK_A − VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0×41 - 0×5A)
static int VK_A − VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0×41 - 0×5A)
static int VK_ACCEPT − Constant for the Accept or Commit function key.
static int VK_ACCEPT − Constant for the Accept or Commit function key.
static int VK_ADD
static int VK_ADD
static int VK_AGAIN
static int VK_AGAIN
static int VK_ALL_CANDIDATES − Constant for the All Candidates function key.
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_ALPHANUMERIC − Constant for the Alphanumeric function key.
static int VK_ALT
static int VK_ALT
static int VK_ALT_GRAPH − Constant for the AltGraph function key.
static int VK_ALT_GRAPH − Constant for the AltGraph function key.
static int VK_AMPERSAND
static int VK_AMPERSAND
static int VK_ASTERISK
static int VK_ASTERISK
static int VK_AT − Constant for the "@" key.
static int VK_AT − Constant for the "@" key.
static int VK_B
static int VK_B
static int VK_BACK_QUOTE
static int VK_BACK_QUOTE
static int VK_BACK_SLASH − Constant for the back slash key, "\"
static int VK_BACK_SLASH − Constant for the back slash key, "\"
static int VK_BACK_SPACE
static int VK_BACK_SPACE
static int VK_BEGIN − Constant for the Begin key.
static int VK_BEGIN − Constant for the Begin key.
static int VK_BRACELEFT
static int VK_BRACELEFT
static int VK_BRACERIGHT
static int VK_BRACERIGHT
static int VK_C
static int VK_C
static int VK_CANCEL
static int VK_CANCEL
static int VK_CAPS_LOCK
static int VK_CAPS_LOCK
static int VK_CIRCUMFLEX − Constant for the "^" key.
static int VK_CIRCUMFLEX − Constant for the "^" key.
static int VK_CLEAR
static int VK_CLEAR
static int VK_CLOSE_BRACKET − Constant for the close bracket key, "]"
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_CODE_INPUT − Constant for the Code Input function key.
static int VK_COLON − Constant for the ":" key.
static int VK_COLON − Constant for the ":" key.
static int VK_COMMA − Constant for the comma key, ","
static int VK_COMMA − Constant for the comma key, ","
static int VK_COMPOSE − Constant for the Compose function 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_CONTEXT_MENU − Constant for the Microsoft Windows Context Menu key.
static int VK_CONTROL
static int VK_CONTROL
static int VK_CONVERT − Constant for the Convert function key.
static int VK_CONVERT − Constant for the Convert function key.
static int VK_COPY
static int VK_COPY
static int VK_CUT
static int VK_CUT
static int VK_D
static int VK_D
static int VK_DEAD_ABOVEDOT
static int VK_DEAD_ABOVEDOT
static int VK_DEAD_ABOVERING
static int VK_DEAD_ABOVERING
static int VK_DEAD_ACUTE
static int VK_DEAD_ACUTE
static int VK_DEAD_BREVE
static int VK_DEAD_BREVE
static int VK_DEAD_CARON
static int VK_DEAD_CARON
static int VK_DEAD_CEDILLA
static int VK_DEAD_CEDILLA
static int VK_DEAD_CIRCUMFLEX
static int VK_DEAD_CIRCUMFLEX
static int VK_DEAD_DIAERESIS
static int VK_DEAD_DIAERESIS
static int VK_DEAD_DOUBLEACUTE
static int VK_DEAD_DOUBLEACUTE
static int VK_DEAD_GRAVE
static int VK_DEAD_GRAVE
static int VK_DEAD_IOTA
static int VK_DEAD_IOTA
static int VK_DEAD_MACRON
static int VK_DEAD_MACRON
static int VK_DEAD_OGONEK
static int VK_DEAD_OGONEK
static int VK_DEAD_SEMIVOICED_SOUND
static int VK_DEAD_SEMIVOICED_SOUND
static int VK_DEAD_TILDE
static int VK_DEAD_TILDE
static int VK_DEAD_VOICED_SOUND
static int VK_DEAD_VOICED_SOUND
static int VK_DECIMAL
static int VK_DECIMAL
static int VK_DELETE
static int VK_DELETE
static int VK_DIVIDE
static int VK_DIVIDE
static int VK_DOLLAR − Constant for the "$" key.
static int VK_DOLLAR − Constant for the "$" key.
static int VK_DOWN − Constant for the non-numpad down arrow key.
static int VK_DOWN − Constant for the non-numpad down arrow key.
static int VK_E
static int VK_E
static int VK_END
static int VK_END
static int VK_ENTER
static int VK_ENTER
static int VK_EQUALS − Constant for the equals key, "="
static int VK_EQUALS − Constant for the equals key, "="
static int VK_ESCAPE
static int VK_ESCAPE
static int VK_EURO_SIGN − Constant for the Euro currency sign key.
static int VK_EURO_SIGN − Constant for the Euro currency sign key.
static int VK_EXCLAMATION_MARK − Constant for the "!" key.
static int VK_EXCLAMATION_MARK − Constant for the "!" key.
static int VK_F
static int VK_F
static int VK_F1 − Constant for the F1 function key.
static int VK_F1 − Constant for the F1 function key.
static int VK_F10 − Constant for the F10 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_F11 − Constant for the F11 function key.
static int VK_F12 − Constant for the F12 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_F13 − Constant for the F13 function key.
static int VK_F14 − Constant for the F14 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_F15 − Constant for the F15 function key.
static int VK_F16 − Constant for the F16 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_F17 − Constant for the F17 function key.
static int VK_F18 − Constant for the F18 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_F19 − Constant for the F19 function key.
static int VK_F2 − Constant for the F2 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_F20 − Constant for the F20 function key.
static int VK_F21 − Constant for the F21 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_F22 − Constant for the F22 function key.
static int VK_F23 − Constant for the F23 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_F24 − Constant for the F24 function key.
static int VK_F3 − Constant for the F3 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_F4 − Constant for the F4 function key.
static int VK_F5 − Constant for the F5 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_F6 − Constant for the F6 function key.
static int VK_F7 − Constant for the F7 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_F8 − Constant for the F8 function key.
static int VK_F9 − Constant for the F9 function key.
static int VK_F9 − Constant for the F9 function key.
static int VK_FINAL
static int VK_FINAL
static int VK_FIND
static int VK_FIND
static int VK_FULL_WIDTH − Constant for the Full-Width Characters function key.
static int VK_FULL_WIDTH − Constant for the Full-Width Characters function key.
static int VK_G
static int VK_G
static int VK_GREATER
static int VK_GREATER
static int VK_H
static int VK_H
static int VK_HALF_WIDTH − Constant for the Half-Width Characters function key.
static int VK_HALF_WIDTH − Constant for the Half-Width Characters function key.
static int VK_HELP
static int VK_HELP
static int VK_HIRAGANA − Constant for the Hiragana function key.
static int VK_HIRAGANA − Constant for the Hiragana function key.
static int VK_HOME
static int VK_HOME
static int VK_I
static int VK_I
static int VK_INPUT_METHOD_ON_OFF − Constant for the input method on/off key.
static int VK_INPUT_METHOD_ON_OFF − Constant for the input method on/off key.
static int VK_INSERT
static int VK_INSERT
static int VK_INVERTED_EXCLAMATION_MARK − Constant for the inverted exclamation mark key.
static int VK_INVERTED_EXCLAMATION_MARK − Constant for the inverted exclamation mark key.
static int VK_J
static int VK_J
static int VK_JAPANESE_HIRAGANA − Constant for the Japanese-Hiragana function key.
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_KATAKANA − Constant for the Japanese-Katakana function key.
static int VK_JAPANESE_ROMAN − Constant for the Japanese-Roman function key.
static int VK_JAPANESE_ROMAN − Constant for the Japanese-Roman function key.
static int VK_K
static int VK_K
static int VK_KANA
static int VK_KANA
static int VK_KANA_LOCK − Constant for the locking Kana function key.
static int VK_KANA_LOCK − Constant for the locking Kana function key.
static int VK_KANJI
static int VK_KANJI
static int VK_KATAKANA − Constant for the Katakana function key.
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_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_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_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_KP_UP − Constant for the numeric keypad up arrow key.
static int VK_L
static int VK_L
static int VK_LEFT − Constant for the non-numpad left arrow key.
static int VK_LEFT − Constant for the non-numpad left arrow key.
static int VK_LEFT_PARENTHESIS − Constant for the "(" key.
static int VK_LEFT_PARENTHESIS − Constant for the "(" key.
static int VK_LESS
static int VK_LESS
static int VK_M
static int VK_M
static int VK_META
static int VK_META
static int VK_MINUS − Constant for the minus key, "-"
static int VK_MINUS − Constant for the minus key, "-"
static int VK_MODECHANGE
static int VK_MODECHANGE
static int VK_MULTIPLY
static int VK_MULTIPLY
static int VK_N
static int VK_N
static int VK_NONCONVERT − Constant for the Don't Convert function key.
static int VK_NONCONVERT − Constant for the Don't Convert function key.
static int VK_NUM_LOCK
static int VK_NUM_LOCK
static int VK_NUMBER_SIGN − Constant for the "#" key.
static int VK_NUMBER_SIGN − Constant for the "#" key.
static int VK_NUMPAD0
static int VK_NUMPAD0
static int VK_NUMPAD1
static int VK_NUMPAD1
static int VK_NUMPAD2
static int VK_NUMPAD2
static int VK_NUMPAD3
static int VK_NUMPAD3
static int VK_NUMPAD4
static int VK_NUMPAD4
static int VK_NUMPAD5
static int VK_NUMPAD5
static int VK_NUMPAD6
static int VK_NUMPAD6
static int VK_NUMPAD7
static int VK_NUMPAD7
static int VK_NUMPAD8
static int VK_NUMPAD8
static int VK_NUMPAD9
static int VK_NUMPAD9
static int VK_O
static int VK_O
static int VK_OPEN_BRACKET − Constant for the open bracket key, "["
static int VK_OPEN_BRACKET − Constant for the open bracket key, "["
static int VK_P
static int VK_P
static int VK_PAGE_DOWN
static int VK_PAGE_DOWN
static int VK_PAGE_UP
static int VK_PAGE_UP
static int VK_PASTE
static int VK_PASTE
static int VK_PAUSE
static int VK_PAUSE
static int VK_PERIOD − Constant for the period key, "."
static int VK_PERIOD − Constant for the period key, "."
static int VK_PLUS − Constant for the "+" key.
static int VK_PLUS − Constant for the "+" key.
static int VK_PREVIOUS_CANDIDATE − Constant for the Previous Candidate function key.
static int VK_PREVIOUS_CANDIDATE − Constant for the Previous Candidate function key.
static int VK_PRINTSCREEN
static int VK_PRINTSCREEN
static int VK_PROPS
static int VK_PROPS
static int VK_Q
static int VK_Q
static int VK_QUOTE
static int VK_QUOTE
static int VK_QUOTEDBL
static int VK_QUOTEDBL
static int VK_R
static int VK_R
static int VK_RIGHT − Constant for the non-numpad right arrow key.
static int VK_RIGHT − Constant for the non-numpad right arrow key.
static int VK_RIGHT_PARENTHESIS − Constant for the ")" 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_ROMAN_CHARACTERS − Constant for the Roman Characters function key.
static int VK_S
static int VK_S
static int VK_SCROLL_LOCK
static int VK_SCROLL_LOCK
static int VK_SEMICOLON − Constant for the semicolon key, ";"
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_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_SEPARATOR − Constant for the Numpad Separator key.
static int VK_SHIFT
static int VK_SHIFT
static int VK_SLASH − Constant for the forward slash key, "/"
static int VK_SLASH − Constant for the forward slash key, "/"
static int VK_SPACE
static int VK_SPACE
static int VK_STOP
static int VK_STOP
static int VK_SUBTRACT
static int VK_SUBTRACT
static int VK_T
static int VK_T
static int VK_TAB
static int VK_TAB
static int VK_U
static int VK_U
static int VK_UNDEFINED − This value is used to indicate that the keyCode is unknown.
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_UNDERSCORE − Constant for the "_" key.
static int VK_UNDO
static int VK_UNDO
static int VK_UP − Constant for the non-numpad up arrow key.
static int VK_UP − Constant for the non-numpad up arrow key.
static int VK_V
static int VK_V
static int VK_W
static int VK_W
static int VK_WINDOWS − Constant for the Microsoft Windows "Windows" key.
static int VK_WINDOWS − Constant for the Microsoft Windows "Windows" key.
static int VK_X
static int VK_X
static int VK_Y
static int VK_Y
static int VK_Z
static int VK_Z
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)
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
This class inherits methods from the following classes −
java.awt.event.InputEvent
java.awt.event.ComponentEvent
java.awt.AWTEvent
java.util.EventObject
java.lang.Object

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