Question

Create a super class called Store which will have below member variables, constructor, and methods

Member variables:

- a final variable - SALES_TAX_RATE = 0.06

- String name;

/**

* Constructor:<BR>

* Allows client to set beginning value for name

* This constructor takes one parameter<BR>

* Calls mutator method setName to set the name of the store

* @param name the name of the store

*/

/** getName method

* @return a String, the name of the store

*/

/**

* Mutator method setName:<BR>

* Allows client to set value of name

* @param name the new name for the store

*/

/**

* toString()

* @return a string representation of the store

*/

========================

Create another class called GroceryStore which extends the parent class Store with below member variables, methods and constructor –

Member variables

double annualRevenues;

boolean chain;

/**

* Constructor:<BR>

* Allows client to set beginning value for annualRevenues and chain

* This constructor takes three parameters<BR>

* Calls super constructor to set store name

* Calls mutator methods to set annual revenue and chain

* @param name the new name for the store

* @param annualRevenues the new annual revenues

* @param chain the new value of whether the store is part of a chain

*/

/** getAnnualRevenues method

* @return a double, the annual revenues

*/

/** getChain method

* @return a boolean, true if the store is part of a chain, false otherwise

*/

/**

* Mutator method:<BR>

* Allows client to set value of annualRevenues

* @param annualRevenues the new annual revenues

* if annualRevenues is negative, then annualRevenues is not changed

*/

/**

* Mutator method:<BR>

* Allows client to set value of chain

* @param chain the new value of chain

*/

/**

* toString method

* @return a string representation of the grocery store

*/

/**

* annualTaxes method

* Computes the annual taxes paid by the store. It is

* SALES_TAX_RATE times Annual Revenues

* @return a double, the annual taxes paid by the store

*/

================================

Instantiate the GroceryStore class from a client (Main) application with below values. Print the store details by calling the toString() method, to the console

GroceryStore gs1 = new GroceryStore( "Eddie's", 3523450.45, false );

GroceryStore gs2 = new GroceryStore( "Giant 43", 4321090.65, true );

Call the annualTaxes() method on each of the GroceryStore instances to print the annual taxes paid by each stores

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. If not, PLEASE let me know before you rate, I’ll help you fix whatever issues. Thanks

//Store.java

public class Store {

      //final sales tax amount

      protected static final double SALES_TAX_RATE = 0.06;

      //name of store

      private String name;

      //constructor

      public Store(String name) {

            setName(name);

      }

     

      //getter and setter for name

     

      public String getName() {

            return name;

      }

      public void setName(String name) {

            this.name = name;

      }

      //returns a String containing store info

      public String toString() {

            return "Store [name=" + name + "]";

      }

}

//GroceryStore.java extended from Store

public class GroceryStore extends Store {

      private double annualRevenues;

      private boolean chain;

     

      //constructor

      public GroceryStore(String name, double annualRevenues, boolean chain) {

            //passing name to super class constructor

            super(name);

            setAnnualRevenues(annualRevenues);

            setChain(chain);

      }

     

      //getters and setters

      public double getAnnualRevenues() {

            return annualRevenues;

      }

      public boolean getChain() {

            return chain;

      }

      public void setAnnualRevenues(double annualRevenues) {

            //updating annualRevenues if parameter is positive

            if (annualRevenues >= 0)

                  this.annualRevenues = annualRevenues;

      }

      public void setChain(boolean chain) {

            this.chain = chain;

      }

      public String toString() {

            return "GroceryStore [name=" + getName() + ", annualRevenues="

                        + annualRevenues + ", chain=" + chain + "]";

      }

     

      //calculates and returns the tax amount

      public double annualTaxes() {

            return annualRevenues * SALES_TAX_RATE;

      }

}

//Main.java

public class Main {

      public static void main(String[] args) {

            // creating GroceryStore objects

            GroceryStore gs1 = new GroceryStore("Eddie's", 3523450.45, false);

            GroceryStore gs2 = new GroceryStore("Giant 43", 4321090.65, true);

            // displaying each (using toString) and printing annual taxes

            System.out.println(gs1);

            System.out.println("Annual taxes: " + gs1.annualTaxes());

            System.out.println(gs2);

            System.out.println("Annual taxes: " + gs2.annualTaxes());

      }

}

/*OUTPUT*/

GroceryStore [name=Eddie's, annualRevenues=3523450.45, chain=false]

Annual taxes: 211407.027

GroceryStore [name=Giant 43, annualRevenues=4321090.65, chain=true]

Annual taxes: 259265.439