last index of arraylist java code example

Example 1: get last index of array java

int[] someArray = {1,2,3,4,5};
int first = someArray[0];
int last = someArray[someArray.length - 1];
System.out.println("First: " + first + "\n" + "Last: " + last);

Example 2: ArrayList lastIndexOf(Object o) method in java

import java.util.ArrayList;
public class ArrayListLastIndexOfMethodExample
{
   public static void main(String[] args)
   {
      ArrayList<Integer> al = new ArrayList<Integer>();
      al.add(40);
      al.add(98);
      al.add(20);
      al.add(98);
      al.add(35);
      al.add(45);
      al.add(35);
      System.out.println("Last occurrence of element 98 is: " + al.lastIndexOf(98));
      System.out.println("Last occurrence of element 35 is: " + al.lastIndexOf(35));
   }
}

Example 3: get last n elements from list java

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