Please help me with this Java coding activity.

Here's the given code===========================

import java.util.ArrayList;

public class U7_L3_Activity_One { // Write your shiftRight method here

}

import java.util.Scanner; import java.util.ArrayList;

public class runner_U7_L3_Activity_One{

public static void main(String[] args){ Scanner scan = new Scanner(System.in); ArrayList words = new ArrayList(); System.out.println("Please enter words, enter STOP to stop the loop."); String input = scan.nextLine(); while(!input.equals("STOP")){ words.add(input); input = scan.nextLine(); } U7_L3_Activity_One.shiftRight(words); System.out.println(words); } }

Instructions Write a public static void method named shiftright which takes a single parameter of an arrayList of string objects. The method should shift every element of the parameter ArrayList one position to the right, and move the last element of the list into the first position. For example, if the parameter list passed to the method initially prints as [I, am, here] , this would become [here, I, am] after the method is executed. Write your shiftright method in the U7__3_Activity_One class. Use the runner class to test your method but do not add a main method to your u7__3_Activity_one.java file or your code will not be scored correctly. Hint: think about which built in ArrayList methods can cause multiple elements to shift when they are called