Split Everything before a particular pattern

Question

I have a String

Jon, Kim, Hem, David, Gary, Bryan, Otis, Neil, Blake, Greg, @Team=Cowboys, Chargers, Panthersm, Royals, Kings, Warriors

I want to split this string in java from all commas before @Team appears. The result should look like:

Jon
Kim
Hem
David
Gary
Bryan
Otis
Neil
Blake
Greg
@Team=Cowboys, Chargers, Panthersm, Royals, Kings, Warriors

My java code uses regex (?<=)(?=@Team) :

String data = "Jon, Kim, Hem, David, Gary, Bryan, Otis, Neil, Blake, Greg, @Team=Cowboys, Chargers, Panthersm, Royals, Kings, Warriors";
String arr[] = data.split("(?<=)(?=@Team)");
String temp[] = arr[0].split(",\\s");
String result[] = new String[temp.length + 1];

int i=0;
for(i=0; i<temp.length; i++)
    result[i] = temp[i];

result[i] = arr[1];

for(String s : result)
    System.out.println(s);

It does the job but there's a lot of boilerplate. Is there any regex so that I can do all this stuff in one shot?

Thanks.

Answer 1

You can use regex ,\s(?=.*@Team)

DEMO

This is basically looking for pairs of ,\s followed by anything thats further followed by string @Team.

Code

String data = "Jon, Kim, Hem, David, Gary, Bryan, Otis, Neil, Blake, Greg, @Team=Cowboys, Chargers, Panthersm, Royals, Kings, Warriors";
String arr[] = data.split(",\\s(?=.*@Team)");
for(String s : arr) {
    System.out.println(s);
}

Output

Jon
Kim
Hem
David
Gary
Bryan
Otis
Neil
Blake
Greg
@Team=Cowboys, Chargers, Panthersm, Royals, Kings, Warriors