Get the Last Occurrence of the Element

int lastIndexOf(Object o)

   return the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element

import java.util.*;

class ListLastIndexOf{
 public static void main(String args[]){
  List<Integer> myList = new ArrayList<> ();
  
  /* Add Elements to myList */
  myList.add(10);
  myList.add(20);
  myList.add(30);
  myList.add(40);
  myList.add(10);
  myList.add(40);
  myList.add(10);
    
  System.out.println("Elements in myList are");
  System.out.println(myList);
  
  System.out.println("Last Index Of 10 is " + myList.lastIndexOf(10));
  System.out.println("Last Index Of 100 is " + myList.lastIndexOf(100));
 } 
}

Output

Elements in myList are
[10, 20, 30, 40, 10, 40, 10]
Last Index Of 10 is 6
Last Index Of 100 is -1

1. throws ClassCastException if the type of the specified element is incompatible with this list

2. throws NullPointerException if the specified element is null and this

list does not permit null elements

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