Java tutorial
//package com.java2s; import java.util.ArrayList; import java.util.Collection; public class Main { public final static <T> T getLast(ArrayList<T> list) { if (list != null && list.size() > 0) { return list.get(list.size() - 1); } return null; } public final static int size(Collection c) { return c == null ? 0 : c.size(); } }