Get the last object in an array inside an array :O

Question

Let's say have an ArrayList inside another ArrayList whitch contains Strings.

private List<ArrayList<String>> strings = new ArrayList<ArrayList<String>>();

After adding some arrays and strings i want to get the last string in the last array, how do I do?

Answer 1

Well, you can use:

ArrayList<String> lastList = strings.get(strings.size() - 1);
String lastString = lastList.get(lastList.size() - 1);

Or with Guava (or your own getLast method, which would be easy to write...):

String lastString = Iterables.last(Iterables.last(strings));

Answer 2

List<String> lastInnerList = strings.get(strings.size() - 1);
String lastString = lastInnerList.get(lastInnerList.size() - 1);

Answer 3

String lastElement = strings.get(strings.size()-1).get(strings.get(strings.size()-1).size()-1); 

Answer 4

int outerListSize = strings.size();
ArrayList<String> lastInnerList = strings.get(outerListSize - 1);
int lastInnerListSize = lastInnerList.size();
String str = lastInnerList.get(lastInnerListSize - 1);