public String replaceChar(char ch) {
		String replaceCh = "";
		switch (ch) {
		case '\n':
			return "\\n";
		case '\t':
			return "\\t";
		case '\b':
			return "\\b";
		case '\r':
			return "\\r";
		case '\f':
			return "\\f";
		case '\\':
			return "\\\\";
		case '\'':
			return "\\'";
		case '\"':
			return "\\\"";
		default:
            return String.valueOf((ch));
        }
	}