public static void main(String[] args)

{

// creating an Empty Integer ArrayList

ArrayList<Integer> arr = new ArrayList<Integer>(7);

// using add() to initialize values

arr.add(10);

arr.add(20);

arr.add(30);

arr.add(40);

arr.add(30);

arr.add(30);

arr.add(40);

System.out.println("The list initially " + arr);

// last index of 30

int element = arr.lastIndexOf(30);

if (element != -1)

System.out.println("the lastIndexof of" +

" 30 is " + element);

else

System.out.println("30 is not present in" +

" the list");

// last index of 100

element = arr.lastIndexOf(100);

if (element != -1)

System.out.println("the lastIndexof of 100" +

" is " + element);

else

System.out.println("100 is not present in" +

" the list");

}

}