I have this code:
String message = receiveMessage();
String[] reciv = message.split("|");
System.out.println("mess: " + message);
System.out.println("reciv: " + reciv[0]);
And this output:
mess: E|NAME
reciv:
I look some strange, E|NAME is E|NAME*space**space**space**space**space**space**space*...
I try to copy the "spaces" and I can't. I'm thinking the "spaces" no are "spaces".
Sorry for my bad English, I'm Spanish.
split uses regex and in regex | has special meaning which is OR so "|" means empty string "" OR empty string "". Splitting on empty string means that
"ABC"
will split in these places (I will mark them with |)
"|A|B|C|"
producing array ["", "A", "B", "C", ""] but as split documentation says
Trailing empty strings are therefore not included in the resulting array
so last empty space is removed. So you get in result ["", "A", "B", "C"]
Now if you want make it | literal you need to escape it using for example
split("\\|") split("[|]").split(Pattern.quote("|"))split("\\Q|\\E")
[..] is character class. Lets say that you want to find characters between a and e. You could write regex that will match them as "a|b|c|d|e" or just use character class like [abcde] or use range operator - inside like [a-e]. Note that one character class can have few characters or charactes ranges inside and they order doesnt matter so all its elements are by default separated with OR operator so there is no need for explicitly usage | inside it. That is why it is treated as literal instead of regex metacharacter.You can do like this
String message = receiveMessage();
message = message.replaceAll("[\n\r\\s]", "");
String[] str1 = message.split("[|]");
for (int i = 0; i < str1.length; i++) {
System.out.println(str1[i]);
}
