protected Style readStyle() throws Exception {
		if ( mainReadHandle == null ) {
			throw new Exception("Read Handle is null.");
		}
		Read in = mainReadHandle;
		if ( !in.nextLine().isEmpty()) {
			throw new Exception("Read Error.");
		}
		if ( !in.nextLine().equals("StyleObjectB")) {
			throw new Exception("Read Error.");
		}
		// Ϊ乹캯׼
		String name;
		Long iD;
		name = in.nextLine();
		iD = in.nextLong();
		// ע⣺next֮nextlineȡһִ
		// next֮ȴûлеûַ
		// ʵnextlineȡ˾֮Ǹз
		// NoteѾRead԰װʽ
		if ( !in.nextLine().equals("StyleObjectE")) {
			throw new Exception("Read Error.");
		}
		return new Style(name, iD);
	}