CODEWITHSUNDEEP
javastringextract
PulsePanda
PulsePanda

Reputation: 1856

how to extract unknown names out of a string

I'm trying to make a Minecraft Server control panel, and I want to get a list of all online players, each username in it's own String. The way you get the users is typing /list and it returns a string. the returned string looks like:

[HH:MM:SS] INFO: username1, username2, username3, and username4

so, how would i extract each username into it's own string? I've googled this, and looked as similar questions, and I cant find a useful answer. I thought about string.replaceAll(); but i cant seem to get that to work.

Any suggestions?

Upvotes: 0

Views: 128

Answers (3)

barak manos
barak manos

Reputation: 30136

The previous answer with a few more technical details:

String[] usernames = String.split(",");

In order to extract the first username, you'll have to do something like:

String username1 = usernames[0].split("INFO:")[1]; // not sure if you need ":" or "\:", so check it out...

This is because usernames[0] == "[HH:MM:SS] INFO: username1", and you want to split it into the sub-string that appears before "INFO:" and the sub-string that appears after it.

In order to extract the remaining usernames, just iterate the usernames array from index 1.

For example:

for (int i=1; i<usernames.length; i++)
    System.out.println(usernames[i]);

Note: you might want to strip off leading and/or trailing spaces, using strip().

Upvotes: 1

Jeremy Bader
Jeremy Bader

Reputation: 382

Adding to what lucian said:

String [] data = s.split(", ");
data[0]=data[0].replaceAll("[HH:MM:SS] INFO: ", "");

Should replace the unwanted beginning of that string with nothing ("");

Upvotes: 0

Gergely Kr&#225;lik
Gergely Kr&#225;lik

Reputation: 441

try using

String.split(", ");

This will split the string to an array.

Here is how> tutorial

String usernames = ...; // fill with data

String[] data = usernames.split(", ");

Afther this you must remove the date and time from the first name.

Upvotes: 1

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