List<E> tail = l.subList(Math.max(l.size() - 3, 0), l.size());

ArrayList<Integer> list = new ArrayList<Integer>(5); 

int last = list.get(list.size() - 1); 

firstNum = numbers[0];

lastNum = numbers[numbers.length-1];

int[] arr = new int[5]; //length of the array is 5

int val = arr[arr.length - 1]; //here variable val stores the last element of arr

import java.util.ArrayList;

import java.util.Arrays;

public class ArrayListExample 

{

    public static void main(String[] args) 

    {

        ArrayList<String> list = new ArrayList<>(Arrays.asList("alex", "brian", "charles","alex","dough","gary","alex","harry"));

        int lastIndex = list.lastIndexOf("alex");

        System.out.println(lastIndex);

        lastIndex = list.lastIndexOf("hello");

        System.out.println(lastIndex);

    }

}

int last = list.get(list.size() - 1); 

int e = list.get(list.size() - 1);

int a[]={1,2,3};

int last = a[a.length-1];

// Java code to find first and last element

// of ArrayList

import java.util.ArrayList;

public class GFG {

    // main method

    public static void main(String[] args)

    {

        // creating an Empty Integer ArrayList

        ArrayList<Integer> list = new ArrayList<Integer>(5);

        // using add() to initialize values

        list.add(1);

        list.add(2);

        list.add(3);

        list.add(4);

        // printing initial value ArrayList

        System.out.print("ArrayList: " + list);

        // find first element

        int first = list.get(0);

        // find last element

        int last = list.get(list.size() - 1);

        // print first and last element of ArrayList

        System.out.println("\nFirst : " + first

                           + ", Last : " + last);

    }

}

List<Post> myLastPosts = posts.subList(posts.size()-40, posts.size());