Question

In Java, Write a class encapsulating a restaurant,which inherits from Store. A restaurant has the following additional attributes: how many people are served every year and the average price per person. code the constructor, accessors, mutators, toString and equals method of the new subclass; also code a method returning the average taxes per year. You also need to include a client class to test your code for both the parent class and the subclass.

Code for Store below(Super class aka Parent class)

public class Store
{
public final double SALES_TAX_RATE = 0.06;
private String name;

/**
* Overloaded constructor:<BR>
* Allows client to set beginning value for name
* This constructor takes one parameter<BR>
* Calls mutator method
* @param newName the name of the store
*/
public Store( String newName )
{
setName( newName );
}

/** getName method
* @return a String, the name of the store
*/
public String getName( )
{
return name;
}

/**
* Mutator method:<BR>
* Allows client to set value of name
* @param newName the new name for the store
*/
public void setName( String newName )
{
name = newName;
}

/**
* @return a string representation of the store
*/
public String toString( )
{
return( "name: " + name );
}

/**
* equals method
* Compares two Store objects for the same field value
* @param o another Store object
* @return a boolean, true if this object
* has the same field value as the parameter s
*/
public boolean equals( Object o )
{
if ( ! ( o instanceof Store ) )
return false;
else
{
Store s = (Store) o;
return ( name.equalsIgnoreCase( s.name ) );
}//end else

}//end equals method

}//end class

Answer 1

Store.java

public class Store

{

public final double SALES_TAX_RATE = 0.06;

private String name;

/**

* Overloaded constructor:<BR>

* Allows client to set beginning value for name

* This constructor takes one parameter<BR>

* Calls mutator method

* @param newName the name of the store

*/

public Store( String newName )

{

setName( newName );

}

/** getName method

* @return a String, the name of the store

*/

public String getName( )

{

return name;

}

/**

* Mutator method:<BR>

* Allows client to set value of name

* @param newName the new name for the store

*/

public void setName( String newName )

{

name = newName;

}

/**

* @return a string representation of the store

*/

public String toString( )

{

return( "name: " + name );

}

/**

* equals method

* Compares two Store objects for the same field value

* @param o another Store object

* @return a boolean, true if this object

* has the same field value as the parameter s

*/

public boolean equals( Object o )

{

if ( ! ( o instanceof Store ) )

return false;

else

{

Store s = (Store) o;

return ( name.equalsIgnoreCase( s.name ) );

}//end else

}//end equals method

}//end class

Restaurant.java

public class Restaurant extends Store {

private int personsServedEveryYear;

private double averagePrice;

public Restaurant(String newName, int persons, double avgPrice)

{

super(newName); // Calls the Store constructor is one.

setPersonsServed(persons);

setAveragePrice(avgPrice);

}

//accessors and mutuators

/**

* Mutator method:<BR>

* Allows client to set value of number of persons served every year

* @param persons the new value for personsServedEveryYear

*/

public void setPersonsServed(int persons)

{

personsServedEveryYear = persons;

}

/**

* Mutator method:<BR>

* Allows client to set value of average price per person

* @param avgPrice the new value for averagePrice

*/

public void setAveragePrice(double avgPrice)

{

averagePrice = avgPrice;

}

/**

* @return an int representing number of persons served every year

*/

public int getPersonsServed()

{

return personsServedEveryYear;

}

/**

* @return an double representing average price per person

*/

public double getAveragePrice()

{

return averagePrice;

}

/**

* @return a string representation of the Restaurant

*/

public String toString( )

{

return super.toString() + "\n"

+ "persons served per year: " + getPersonsServed() +

"\naverage price per person: " + getAveragePrice();

}

/**

* equals method

* Compares two Store objects for the same field value

* @param o another Store object

* @return a boolean, true if this object

* has the same field value as the parameter s

*/

public boolean equals( Object o )

{

if ( ! ( o instanceof Restaurant ) )

return false;

else

{

Restaurant r = (Restaurant) o;

return (r.getName().equalsIgnoreCase(getName()) && personsServedEveryYear == r.personsServedEveryYear && averagePrice == r.averagePrice);

}//end else

}//end equals method

/**

* averageTax method

* Calculate and return average tax

*/

public double getAverageTax()

{

return getPersonsServed()*getAveragePrice()*SALES_TAX_RATE;

} //end of getAverageTax method

}//end class

ClientClass.java

public class ClientClass {

public static void main(String[] args) {

//create an object for store

Store s = new Store("ABC");

//create another object for store

Store s1 = new Store("XYZ");

//print s and s1

System.out.println(s.toString());

System.out.println(s1.toString());

//check if s and s1 are equal

if(s.equals(s1))

System.out.println("objects s and s1 are same");

else

System.out.println("objects s and s1 are not same");

//declare an object for store

Store s3;

//set s1 to s3

s3=s1;

//print s1 and s3

System.out.println("\n"+s1.toString());

System.out.println(s3.toString());

//check if s1 and s3 are equal

if(s3.equals(s1))

System.out.println("objects s3 and s1 are same");

else

System.out.println("objects s3 and s1 are not same");

//create two objects for restaurant

Restaurant r1 = new Restaurant("ABC", 10, 49.99);

Restaurant r2 = new Restaurant("XYZ", 15, 45.99);

//print r1 and r2

System.out.println("\n"+r1.toString());

System.out.println(r2.toString());

//check if r1 and r2 are same

if(r2.equals(r1))

System.out.println("objects r1 and r2 are same");

else

System.out.println("objects r1 and r2 are not same");

//declare object r3

Restaurant r3;

//set r3 = r1

r3 = r1;

//check if r3 and r1 are same

System.out.println("\n"+r1.toString());

System.out.println(r3.toString());

if(r3.equals(r1))

System.out.println("objects r1 and r3 are same");

else

System.out.println("objects r1 and r3 are not same");

//print the average tax for restaurant r3

System.out.println("\nThe average sales tax is: " + r3.getAverageTax());

}

}

Output: