Question

Create the following program in java please

Write a class Store which includes the attributes: store name and sales tax rate. Write another class encapsulating a Book Store, which inherits from Store. A Book Store has the following additional attributes: how many books are sold every year and the average price per book. Code the constructor, accessors, mutators, toString and equals method of the super class Store and the subclass Book Store; In the Book Store class, also code a method returning the average taxes per year. You should create a test class which creates 1 Store object and 2 Book Store objects, then calls your set methods, get methods, toString and equals methods and average taxes per year for the Book Store objects..

Answer 1

Please find the code below::

BooksTester.java

package classes1;

class Store{
   private String name;
   private double salesTaxRate;

   public Store() {
       super();
       this.name="";
       this.salesTaxRate = 0;
   }

   public Store(Store s) {
       this.name=s.name;
       this.salesTaxRate = s.salesTaxRate;
   }

   public Store(String name, double salesTaxRate) {
       super();
       this.name = name;
       this.salesTaxRate = salesTaxRate;
   }

   public String getName() {
       return name;
   }
   public void setName(String name) {
       this.name = name;
   }
   public double getSalesTaxRate() {
       return salesTaxRate;
   }
   public void setSalesTaxRate(double salesTaxRate) {
       this.salesTaxRate = salesTaxRate;
   }

   @Override
   public String toString() {
       return "Store [name=" + name + ", salesTaxRate=" + salesTaxRate + "]";
   }

   public boolean equals(Store obj) {
       if(name.equals(obj.name) && salesTaxRate==obj.salesTaxRate){
           return true;
       }else{
           return false;
       }
   }

}

class BookStore extends Store{
   private int countOfBookSold;
   private double averagePrice;

   public BookStore(int countOfBookSold, double averagePrice) {
       super();
       this.countOfBookSold = countOfBookSold;
       this.averagePrice = averagePrice;
   }

   public BookStore(Store s,int countOfBookSold, double averagePrice) {
       super(s);
       this.countOfBookSold = countOfBookSold;
       this.averagePrice = averagePrice;
   }

   public int getCountOfBookSold() {
       return countOfBookSold;
   }
   public void setCountOfBookSold(int countOfBookSold) {
       this.countOfBookSold = countOfBookSold;
   }
   public double getAveragePrice() {
       return averagePrice;
   }
   public void setAveragePrice(double averagePrice) {
       this.averagePrice = averagePrice;
   }

   public boolean equals(BookStore obj) {
       if(this.getName().equals(obj.getName()) &&
               this.getSalesTaxRate()==obj.getSalesTaxRate() &&
               this.averagePrice==obj.averagePrice && this.countOfBookSold==obj.countOfBookSold){
           return true;
       }else{
           return false;
       }
   }
  
   double getAverageTaxPerYear(){
       return countOfBookSold*averagePrice*getSalesTaxRate()/100;
   }

   @Override
   public String toString() {
       return "BookStore [ name ="
               + getName() + ",countOfBookSold=" + countOfBookSold + ", averagePrice=" + averagePrice + ",SalesTaxRate =" + getSalesTaxRate();
   }

}
public class BooksTester {
   public static void main(String[] args) {
       Store myStore = new Store("Books & Me", 24);
       System.out.println(myStore);
       BookStore store1 = new BookStore(myStore, 900, 12);
       System.out.println("Store 1 total book sold : "+store1.getCountOfBookSold());
       System.out.println("Store 1 average book price : "+store1.getAveragePrice());
       System.out.println("Store 1 total sale amount : "+store1.getCountOfBookSold()*store1.getAveragePrice());
       System.out.println("Store 1 tax amount : "+store1.getSalesTaxRate());
       System.out.println("Store 1 average taxes per year : "+store1.getAverageTaxPerYear());
      
       BookStore store2 = new BookStore(myStore, 124, 2);
       System.out.println(store2);
   }
}

output: