gistfile1.txt

	private boolean isValid(String param) {
		return param != null && (param.equals("0") || param.equals("1"));
	}

	private boolean isValid(String... params) {
		for (String param : params) {
			if (!isValid(param)) {
				return false;
			}
		}
		return true;
	}

	public void hello(String open, String w1, String w2, String w3, String w4, String w5, String w6, String w7) {
		if (!isValid(open, w1, w2, w3, w4, w5, w6, w7)) {
			throw new IllegalArgumentException("设置项目参数非法！");
		}
	}