Chapter 15, Problem 12E

Explanation of Solution

Adding the “removeFront” method in “ArrayIntList” class:

//definition of "ArrayIntList" class

public class ArrayIntList

{

    //declare the required variables

    private int[] elementData;

    private int size;

    //refer the remaining methods in the textbook

    //definition of "removeFront" method

    public void removeFront(int n)

    {

      //iterate "i" until it reaches "size" value

        for (int i = n; i < size; i++)

        {

            //set the value

   �...