Question

You are asked to finish the folloning programs. Duc on 07/05/18 (in classs). Considering a hierarchy of greeting cards. The parent class is Cards, and its children classes are Valentine, Holiday and Birthday, as shown below: In this exercise, Cards class is provided as below. As you can see, Cards class contains a recipient's name in String type, and a method: greeting0. In this exercise, please implement the three Cards children classes: Valentine, Holiday, and Birthday, according to the following specifications: Valentine class contains its own data field: int kisses . Birthday class contains its own data field: int age. · Implement the constructor and greeting() method for each subclass. The constructor should initilize the subclass's data field as well as its parent's data field. The greetingo method outputs the message related to its own subclass and should contain the information of its atributes. The example greeting messa e example greeting messages are followings: reespiest public cards) his("Jahn Smith ): public CardscSering recipient this recipient recipient; public veid greeting Systen out.printin "wish you a wonder ful sumer" Your three subclasses should work with the following driver program "CardTest.java" publ.ic ctass CardTest polic static vold Bain(String[] args) Card card - new Holidayl "Alsce") card. greeting card sew Val ent inel Bob". 12) card greeting card sew Birthdayl "Charlie". 4) card greeting Submission: print out four files: Valentine.java, Holiday java, Birthday.java, and CardTest.java, and append your result at the end.

Answer 1

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Create a package and then create all java classes with same name as give below then copy and paste code given below on respective file

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

Cards.java

public class Cards {

//variable

String recipient;

//constructor

public Cards()

{

this("John Smith");

}

//constructor with one parameter

public Cards(String recipient)

{

this.recipient=recipient;

}

// greeting method

public void greeting()

{

System.out.println("Dear " + recipient+ ":\n");

System.out.println("Wish you a wonderful summer");

}

}

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

Holiday.java

// this class inherit or extends the parent class Cards

public class Holiday extends Cards {

//constructor

public Holiday(String recipient)

{

/// call Parent class constructor variable

super.recipient =recipient;

}

// override the super class greeting method

public void greeting()

{

System.out.print("Holiday : ");

System.out.println("Dear " + recipient);

System.out.print("Season's Greetings! \n");

}

}

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

Valentine.java

//this class inherit or extends the parent class Cards

public class Valentine extends Cards {

//variable declaration

int kisses;

//getter

public int getKisses() {

return kisses;

}

//setter

public void setKisses(int kisses) {

this.kisses = kisses;

}

//constructor

public Valentine(String recipient,int kisses)

{

this.kisses=kisses;

// call Parent class constructor variable

super.recipient=recipient;

}

// override the super class greeting method

public void greeting()

{

System.out.print("\nValentine : ");

System.out.println("Dear " + recipient+ ",");

System.out.println("Love and Kisse,");

System.out.print("XXXXX... ( " + getKisses() + " Number of 'X' )\n");

}

}

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

Birthday.java

//this class inherit or extends the parent class Cards

public class Birthday extends Cards {

// variable

int age;

//getter

public int getAge() {

return age;

}

//setter

public void setAge(int age) {

this.age = age;

}

// constructor

public Birthday( String recipient,int age)

{

this.age=age;

// call Parent class constructor variable

super.recipient=recipient;

}

// override the super class greeting method

public void greeting()

{

System.out.print("\nBirthday : ");

System.out.println("Dear " + recipient);

System.out.print("Happy " + age +"th Birthday!");

}

}

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

CardTest.java

// main driver Class

public class CardTest {

// main method

public static void main(String[] args) {

// create the object of Holiday with referencing of Parent Cards class

// and initialize a value to variable by constructor

Cards card = new Holiday("Alice");

// call the greeting method

card.greeting();

// create the object of Valentine with referencing of Parent Cards class

// and initialize a value to variable by constructor

card = new Valentine("Bob", 12);

// call the greeting method

card.greeting();

// create the object of Birthday with referencing of Parent Cards class

// and initialize a value to variable by constructor

card = new Birthday("Charlie", 4);

// call the greeting method

card.greeting();

}

}

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

Output

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

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