intellij IDEA都用的是旗艦版還是社區辦

boolean tag = true;

final String pattern1 = "^([a-z0-9A-Z]+[-|//.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?//.)+[a-zA-Z]{2,}$";

final Pattern pattern = Pattern.compile(pattern1);

final Matcher mat = pattern.matcher(email);

if (!mat.find()) {