What is wrong with this code and how do I fix it.

What is wrong with this code and how do I fix it. I have also included the customer exception file and the itemsForSale exceptions file

MAIN PROGRAM

/*

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package week_1;

import java.util.Scanner;

/**

 *

 * @author DAM

 */

public class PRG215_Week_1 {

  public static void main(String[] args) {

    //Constant for the total number of items for sale

    final int TOTAL_ITEMS = 6;

    //Create the items object arrays

    ItemsForSale[]items=new ItemsForSale[TOTAL_ITEMS];

    //Loop an instantiate each object – you must always create the individual object

    for(int i=0; i<TOTAL_ITEMS;i++)

    {

      items[i] = new ItemsForSale();

    }

    //Use the PopulateItem method from the ItemsForSale class to inser the properties of each item object for sale

    items[0].PopulateItem(“Tennis Shoes”, 45.89,true);

    items[1].PopulateItem(“Shirts”, 25.55, true);

    items[2].PopulateItem(“Coats”, 89.99, true);

    items[3].PopulateItem(“Belts”, 15, true);

    items[4].PopulateItem(“Pants”, 25.99, true);

    items[5].PopulateItem(“Donation”, 10, false);

    //variables to for the financial calculations

    double totalAmount = 0.0;

    double totalTax = 0.0;

    double taxRate = 0.081;

    //Discounts for large purchases

    final double DISCOUNT_RATE = 0.025; //2.5%

    final double AMOUNT_TO_QUALIFY_FOR_DISCOUNT = 100;

    double discountAmount = 0;

    //Display items for sale on the console

    System.out.println(“The following clothing items are available for purchase:”);

    for(int i=0;i<items.length;i++)

    {

      //Display each item in the array

      System.out.println(” “+(i+1)+”.”+items[i].itemName+ “for $”+items[i].itemCost+”each”);

    }

    System.out.println(“”);

    //Create keyboard input object

    Scanner Keyboard = new Scanner(System.in);

    //Create new customer object

    Customer newCust = new Customer();

    //Get the customer last name from the keyboard and store it in the new Cust object’s.firstName property

    newCust.firstName=keyboard.next();

    //Display on the console – ask for the customer’s last name

    System.out.print(“Please enter your last name: “);

    //Get the customer last name from the keyboard and store it in the newCust object’s.lastName property

    newCust.lastName =keyboard.next();

    System.out.println(“”);

    //Display the csutomer’s full name (a method in the customer class) and provide instructions

    System.out.println(“Ok,”+newCust.FullName()+”,Please enter the product ID (the numberto the left of the item “

        + “name) that you wish to purchase. Enter 0 when you are finished.”);

    //Loop until the user enters 0

    int itemID = 0;//Set the condition to 0

    int itemCounter = 1; //No longer the loop condition counter, now used for display

    do

    {

      //Prompt the user

      System.out.print(“Please enter item ID number”+(itemCounter)+”:”);

      //Wrap input in a TRY/CATCH block to capture any user data entry exceptions

      try

      {

        itemID=keyboard.nextInt();

        //Test the user did not enter the exit condition

        if(itemID>0)

        {

          totalAmount=totalAmount+items[itemID-1].itemCost;

          //Moved tax calculation to hear since we might not charge tax on a ll items

          if(items[itemID-1].taxable==true)

          {

            totalTax=totalTax+(items[itemID-1].itemCost*taxRate);

          }

          //Increment the item display counter

          itemCounter++;

        }

      }

      //User entered a number outside the size of the array

    }

  }

  private static class Customer {

    public Customer() {

    }

  }

}

CUSTOMER FILE

/*

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/**

 *

 * @author DAM

 */

public class Customer extends Exception {

  public String firstName;

  public String lastName;

  public String FullName()

  {

    return this.firstName+””+this.lastName;

  }

  /**

   * Creates a new instance of <code>Customer</code> without detail message.

   */

  public Customer() {

  }

  /**

   * Constructs an instance of <code>Customer</code> with the specified detail

   * message.

   *

   * @param msg the detail message.

   */

  public Customer(String msg) {

    super(msg);

  }

}

ITEMS FOR SALE FILE

/*

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 * To change this template file, choose Tools | Templates

 * and open the template in the editor.

 */

package week_1;

/**

 *

 * @author DAM

 */

public class ItemsForSale extends Exception {

  public String itemName;

  public String itemCost;

  public boolean taxable;

  public void PopulateItem(String iName, double iCost, boolean canTax)

  {

    this.itemName=iName;

    this.itemCost=iCost;

    this.taxable=canTax;

  }

  /**

   * Creates a new instance of <code>ItemsForSale</code> without detail

   * message.

   */

  public ItemsForSale() {

  }

  /**

   * Constructs an instance of <code>ItemsForSale</code> with the specified

   * detail message.

   *

   * @param msg the detail message.

   */

  public ItemsForSale(String msg) {

    super(msg);

  }

}