@Override
	public void keyPressed(int key, char c) {
		// EnterSpaceŊm&폜
		if ( key == Keyboard.KEY_RETURN || key == Keyboard.KEY_SPACE ) {
			if ( !"".equals(text) ) {
				inputString(text);
			}
			changeText("");
		// BackSpaceňꕶ폜is[g͂Ȃj
		} else if ( key == Keyboard.KEY_BACK ) {
			changeText(text.substring(0, Math.max(text.length()-1, 0)));
		// ̑ŕ́BpȊO͂͂
		} else {
			if ( ALPHABET.indexOf(c) != -1 ) {
				changeText(text + c);
			}
		}
	}