Method nextToken

java/Chapter 17/Question17_10/QuestionString.java:79–87

()

	}

	private String nextToken() throws IOException {
		if (currentTokenIndex >= tokens.size()) {
			throw new IOException("Unexpected end of input.");
		}

		String token = tokens.get(currentTokenIndex);
		currentTokenIndex++;
		return token;
	}

	private void nextToken(String expectedToken) throws IOException {
		if (currentTokenIndex >= tokens.size()) {