Complete the program below so that it prompts for a string and an integer n, that is no larger than the length of the string, and then prints out the last n characters of that string. For example, given the input string, "Hello, World!" along with the integer 5, the output should be

orld!

Complete the following code:

import java.util.Scanner;

/**
   A program reads in a string, followed by an integer n,
   where the value of the integer should be smaller than the
   length of the string.  The program then prints out the last
   n characters of the string.
*/
public class Strings
{
   public static void main (String[] args)
   {
      // Display prompt for string of characters
      System.out.println("Please enter a string: ");

      // Read string
      Scanner in = new Scanner(System.in);
      String str = in.nextLine();

      // Display prompt for integer n
      System.out.println("Please enter a value for n: ");

      // Read n
      int n = in.nextInt();

      // Print last n characters of string

      // Your work here


   }
}