char c = name.charAt(i);
if (!((c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z') ||
- c == '_' ||
- (c >= '0' && c <= '9') ||
- (c == '.' && i == name.length() - 4))) return false;
+ c == '_' || c == '.' ||
+ (c >= '0' && c <= '9'))) return false;
}
return true;
}