Ok, look. I have ArrayList<ArrayList<String>> which contains 3 different ArrayList<String> items. I'm passing this ArrayList<ArrayList<String>> to client.
I'm stuck at "extracting" items from this ArrayList<ArrayList<String>>. How can I "extract" items from ArrayList<ArrayList<String>> to 3 different ArrayList<String>??? In one turn(optionally); Thanks in advance!
If you know there are three, and your ArrayList<ArrayList<String>> is called bigList, it's as simple as
ArrayList<String> first = bigList.get(0);
ArrayList<String> second = bigList.get(1);
ArrayList<String> third = bigList.get(2);
This will fail if there aren't three in there, of course.
If, instead, you want to loop over all of the ArrayList<String>s that are in there and do something with them, it's
for (ArrayList<String> innerList : bigList) {
// do something with innerList
}
This will now work regardless of how many there are in there. (Even if there are none in there, it'll still work, in the sense of not generating an error: the for loop won't execute at all.)
