使用 Deprecated 来标记方法

    @Deprecated//用来判断ip是否合法public boolean checkIp(String tempIp) {String regex = "(25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d{2}|[1-9]?\\d)){3}";
//        String regex2 = "([1-9]|[1-9]\\\\d|1\\\\d{2}|2[0-4]\\\\d|25[0-5])(\\\\.(\\\\d|[1-9]\\\\d|1\\\\d{2}|2[0-4]\\\\d|25[0-5])){3}";Pattern p = Pattern.compile(regex);Matcher m = p.matcher(tempIp);return m.matches();}

之后在使用该方法时，方法名会有一根删除线标记

boolean isIP = cv.checkIp(ipString);

：boolean isIP = cv. checkIp(ipString);