Key2Str

public static String keyStroke2String(KeyStroke key) {
    StringBuffer s = new StringBuffer(50);
    int m = key.getModifiers();

    if ((m & (InputEvent.SHIFT_DOWN_MASK|InputEvent.SHIFT_MASK)) != 0) {
        s.append("shift ");
    }
    if ((m & (InputEvent.CTRL_DOWN_MASK|InputEvent.CTRL_MASK)) != 0) {
        s.append("ctrl ");
    }
    if ((m & (InputEvent.META_DOWN_MASK|InputEvent.META_MASK)) != 0) {
        s.append("meta ");
    }
    if ((m & (InputEvent.ALT_DOWN_MASK|InputEvent.ALT_MASK)) != 0) {
        s.append("alt ");
    }
    if ((m & (InputEvent.BUTTON1_DOWN_MASK|InputEvent.BUTTON1_MASK)) != 0) {
        s.append("button1 ");
    }
    if ((m & (InputEvent.BUTTON2_DOWN_MASK|InputEvent.BUTTON2_MASK)) != 0) {
        s.append("button2 ");
    }
    if ((m & (InputEvent.BUTTON3_DOWN_MASK|InputEvent.BUTTON3_MASK)) != 0) {
        s.append("button3 ");
    }

    switch (key.getKeyEventType()) {
    case KeyEvent.KEY_TYPED:
        s.append("typed ");
        s.append(key.getKeyChar() + " ");
        break;
    case KeyEvent.KEY_PRESSED:
        s.append("pressed ");
        s.append(getKeyText(key.getKeyCode()) + " ");
        break;
    case KeyEvent.KEY_RELEASED:
        s.append("released ");
        s.append(getKeyText(key.getKeyCode()) + " ");
        break;
    default:
        s.append("unknown-event-type ");
        break;
    }

    return s.toString();
}

public static String getKeyText(int keyCode) {
    if (keyCode >= KeyEvent.VK_0 && keyCode <= KeyEvent.VK_9 ||
        keyCode >= KeyEvent.VK_A && keyCode <= KeyEvent.VK_Z) {
        return String.valueOf((char)keyCode);
    }

    switch(keyCode) {
      case KeyEvent.VK_COMMA: return "COMMA";
      case KeyEvent.VK_PERIOD: return "PERIOD";
      case KeyEvent.VK_SLASH: return "SLASH";
      case KeyEvent.VK_SEMICOLON: return "SEMICOLON";
      case KeyEvent.VK_EQUALS: return "EQUALS";
      case KeyEvent.VK_OPEN_BRACKET: return "OPEN_BRACKET";
      case KeyEvent.VK_BACK_SLASH: return "BACK_SLASH";
      case KeyEvent.VK_CLOSE_BRACKET: return "CLOSE_BRACKET";

      case KeyEvent.VK_ENTER: return "ENTER";
      case KeyEvent.VK_BACK_SPACE: return "BACK_SPACE";
      case KeyEvent.VK_TAB: return "TAB";
      case KeyEvent.VK_CANCEL: return "CANCEL";
      case KeyEvent.VK_CLEAR: return "CLEAR";
      case KeyEvent.VK_SHIFT: return "SHIFT";
      case KeyEvent.VK_CONTROL: return "CONTROL";
      case KeyEvent.VK_ALT: return "ALT";
      case KeyEvent.VK_PAUSE: return "PAUSE";
      case KeyEvent.VK_CAPS_LOCK: return "CAPS_LOCK";
      case KeyEvent.VK_ESCAPE: return "ESCAPE";
      case KeyEvent.VK_SPACE: return "SPACE";
      case KeyEvent.VK_PAGE_UP: return "PAGE_UP";
      case KeyEvent.VK_PAGE_DOWN: return "PAGE_DOWN";
      case KeyEvent.VK_END: return "END";
      case KeyEvent.VK_HOME: return "HOME";
      case KeyEvent.VK_LEFT: return "LEFT";
      case KeyEvent.VK_UP: return "UP";
      case KeyEvent.VK_RIGHT: return "RIGHT";
      case KeyEvent.VK_DOWN: return "DOWN";

      // numpad numeric keys handled below
      case KeyEvent.VK_MULTIPLY: return "MULTIPLY";
      case KeyEvent.VK_ADD: return "ADD";
      case KeyEvent.VK_SEPARATOR: return "SEPARATOR";
      case KeyEvent.VK_SUBTRACT: return "SUBTRACT";
      case KeyEvent.VK_DECIMAL: return "DECIMAL";
      case KeyEvent.VK_DIVIDE: return "DIVIDE";
      case KeyEvent.VK_DELETE: return "DELETE";
      case KeyEvent.VK_NUM_LOCK: return "NUM_LOCK";
      case KeyEvent.VK_SCROLL_LOCK: return "SCROLL_LOCK";

      case KeyEvent.VK_F1: return "F1";
      case KeyEvent.VK_F2: return "F2";
      case KeyEvent.VK_F3: return "F3";
      case KeyEvent.VK_F4: return "F4";
      case KeyEvent.VK_F5: return "F5";
      case KeyEvent.VK_F6: return "F6";
      case KeyEvent.VK_F7: return "F7";
      case KeyEvent.VK_F8: return "F8";
      case KeyEvent.VK_F9: return "F9";
      case KeyEvent.VK_F10: return "F10";
      case KeyEvent.VK_F11: return "F11";
      case KeyEvent.VK_F12: return "F12";
      case KeyEvent.VK_F13: return "F13";
      case KeyEvent.VK_F14: return "F14";
      case KeyEvent.VK_F15: return "F15";
      case KeyEvent.VK_F16: return "F16";
      case KeyEvent.VK_F17: return "F17";
      case KeyEvent.VK_F18: return "F18";
      case KeyEvent.VK_F19: return "F19";
      case KeyEvent.VK_F20: return "F20";
      case KeyEvent.VK_F21: return "F21";
      case KeyEvent.VK_F22: return "F22";
      case KeyEvent.VK_F23: return "F23";
      case KeyEvent.VK_F24: return "F24";

      case KeyEvent.VK_PRINTSCREEN: return "PRINTSCREEN";
      case KeyEvent.VK_INSERT: return "INSERT";
      case KeyEvent.VK_HELP: return "HELP";
      case KeyEvent.VK_META: return "META";
      case KeyEvent.VK_BACK_QUOTE: return "BACK_QUOTE";
      case KeyEvent.VK_QUOTE: return "QUOTE";

      case KeyEvent.VK_KP_UP: return "KP_UP";
      case KeyEvent.VK_KP_DOWN: return "KP_DOWN";
      case KeyEvent.VK_KP_LEFT: return "KP_LEFT";
      case KeyEvent.VK_KP_RIGHT: return "KP_RIGHT";

      case KeyEvent.VK_DEAD_GRAVE: return "DEAD_GRAVE";
      case KeyEvent.VK_DEAD_ACUTE: return "DEAD_ACUTE";
      case KeyEvent.VK_DEAD_CIRCUMFLEX: return "DEAD_CIRCUMFLEX";
      case KeyEvent.VK_DEAD_TILDE: return "DEAD_TILDE";
      case KeyEvent.VK_DEAD_MACRON: return "DEAD_MACRON";
      case KeyEvent.VK_DEAD_BREVE: return "DEAD_BREVE";
      case KeyEvent.VK_DEAD_ABOVEDOT: return "DEAD_ABOVEDOT";
      case KeyEvent.VK_DEAD_DIAERESIS: return "DEAD_DIAERESIS";
      case KeyEvent.VK_DEAD_ABOVERING: return "DEAD_ABOVERING";
      case KeyEvent.VK_DEAD_DOUBLEACUTE: return "DEAD_DOUBLEACUTE";
      case KeyEvent.VK_DEAD_CARON: return "DEAD_CARON";
      case KeyEvent.VK_DEAD_CEDILLA: return "DEAD_CEDILLA";
      case KeyEvent.VK_DEAD_OGONEK: return "DEAD_OGONEK";
      case KeyEvent.VK_DEAD_IOTA: return "DEAD_IOTA";
      case KeyEvent.VK_DEAD_VOICED_SOUND: return "DEAD_VOICED_SOUND";
      case KeyEvent.VK_DEAD_SEMIVOICED_SOUND: return "DEAD_SEMIVOICED_SOUND";

      case KeyEvent.VK_AMPERSAND: return "AMPERSAND";
      case KeyEvent.VK_ASTERISK: return "ASTERISK";
      case KeyEvent.VK_QUOTEDBL: return "QUOTEDBL";
      case KeyEvent.VK_LESS: return "LESS";
      case KeyEvent.VK_GREATER: return "GREATER";
      case KeyEvent.VK_BRACELEFT: return "BRACELEFT";
      case KeyEvent.VK_BRACERIGHT: return "BRACERIGHT";
      case KeyEvent.VK_AT: return "AT";
      case KeyEvent.VK_COLON: return "COLON";
      case KeyEvent.VK_CIRCUMFLEX: return "CIRCUMFLEX";
      case KeyEvent.VK_DOLLAR: return "DOLLAR";
      case KeyEvent.VK_EURO_SIGN: return "EURO_SIGN";
      case KeyEvent.VK_EXCLAMATION_MARK: return "EXCLAMATION_MARK";
      case KeyEvent.VK_INVERTED_EXCLAMATION_MARK:
               return "INVERTED_EXCLAMATION_MARK";
      case KeyEvent.VK_LEFT_PARENTHESIS: return "LEFT_PARENTHESIS";
      case KeyEvent.VK_NUMBER_SIGN: return "NUMBER_SIGN";
      case KeyEvent.VK_MINUS: return "MINUS";
      case KeyEvent.VK_PLUS: return "PLUS";
      case KeyEvent.VK_RIGHT_PARENTHESIS: return "RIGHT_PARENTHESIS";
      case KeyEvent.VK_UNDERSCORE: return "UNDERSCORE";

      case KeyEvent.VK_FINAL: return "FINAL";
      case KeyEvent.VK_CONVERT: return "CONVERT";
      case KeyEvent.VK_NONCONVERT: return "NONCONVERT";
      case KeyEvent.VK_ACCEPT: return "ACCEPT";
      case KeyEvent.VK_MODECHANGE: return "MODECHANGE";
      case KeyEvent.VK_KANA: return "KANA";
      case KeyEvent.VK_KANJI: return "KANJI";
      case KeyEvent.VK_ALPHANUMERIC: return "ALPHANUMERIC";
      case KeyEvent.VK_KATAKANA: return "KATAKANA";
      case KeyEvent.VK_HIRAGANA: return "HIRAGANA";
      case KeyEvent.VK_FULL_WIDTH: return "FULL_WIDTH";
      case KeyEvent.VK_HALF_WIDTH: return "HALF_WIDTH";
      case KeyEvent.VK_ROMAN_CHARACTERS: return "ROMAN_CHARACTERS";
      case KeyEvent.VK_ALL_CANDIDATES: return "ALL_CANDIDATES";
      case KeyEvent.VK_PREVIOUS_CANDIDATE: return "PREVIOUS_CANDIDATE";
      case KeyEvent.VK_CODE_INPUT: return "CODE_INPUT";
      case KeyEvent.VK_JAPANESE_KATAKANA: return "JAPANESE_KATAKANA";
      case KeyEvent.VK_JAPANESE_HIRAGANA: return "JAPANESE_HIRAGANA";
      case KeyEvent.VK_JAPANESE_ROMAN: return "JAPANESE_ROMAN";
      case KeyEvent.VK_KANA_LOCK: return "KANA_LOCK";
      case KeyEvent.VK_INPUT_METHOD_ON_OFF: return "INPUT_METHOD_ON_OFF";

      case KeyEvent.VK_AGAIN: return "AGAIN";
      case KeyEvent.VK_UNDO: return "UNDO";
      case KeyEvent.VK_COPY: return "COPY";
      case KeyEvent.VK_PASTE: return "PASTE";
      case KeyEvent.VK_CUT: return "CUT";
      case KeyEvent.VK_FIND: return "FIND";
      case KeyEvent.VK_PROPS: return "PROPS";
      case KeyEvent.VK_STOP: return "STOP";

      case KeyEvent.VK_COMPOSE: return "COMPOSE";
      case KeyEvent.VK_ALT_GRAPH: return "ALT_GRAPH";
    }

    if (keyCode >= KeyEvent.VK_NUMPAD0 && keyCode <= KeyEvent.VK_NUMPAD9) {
        char c = (char)(keyCode - KeyEvent.VK_NUMPAD0 + '0');
        return "NUMPAD"+c;
    }

    return "unknown(0x" + Integer.toString(keyCode, 16) + ")";
}

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