In JAVA, please
In this module, you will combine your knowledge of class objects, inheritance and linked lists. You will need to first create an object class encapsulating a Trivia Game which INHERITS from Game.
Game is the parent class with the following attributes:
1. description - which is a string
2. write the constructor, accessor, mutator and toString methods.
Trivia is the subclass of Game with the additional attributes:
1. trivia game id - integer
2. ultimate prize money - double
3. number of questions that must be answered to win - integer.
4. write the accessor, mutator, constructor, and toString methods.
Write a client class to test creating 5 Trivia objects. Once you have successfully created Trivia objects, you will continue 6B by adding a linked list of trivia objects to the Trivia class.
//=====================java game class================================
In this module, you will combine your knowledge of class objects, inheritance and linked lists. You will need to first create an object class encapsulating a Trivia Game which INHERITS from Game.
Game is the parent class with the following attributes:
code:
public class Game {
private String description;
public Game()
{
this.description = null;
}
public Game(String description)
{
this.description = description;
}
public String getDescription()
{
return description;
}
public void setDescription(String desc)
{
description = desc;
}
public String toString()
{
return ("Description : "+description);
}
}
//end of Game class
// Java Trivia class
public class Trivia extends Game{
private int game_id;
private double prize_money;
private int questions_to_win;
public Trivia()
{
super();
game_id = 0;
prize_money = 0;
questions_to_win=0;
}
public Trivia(String description,int game_id,double prize_money, int questions_to_win)
{
super(description);
this.game_id = game_id;
this.prize_money = prize_money;
this.questions_to_win = questions_to_win;
}
public int getGameId()
{
return game_id;
}
public double getPrizeMoney()
{
return prize_money;
}
public int getNumQuestionsToWin()
{
return questions_to_win;
}
public void setGameId(int game_id)
{
this.game_id = game_id;
}
public void setPrizeMoney(double prize_money)
{
this.prize_money = prize_money;
}
public void setNumQuestionsToWin(int questions_to_win)
{
this.questions_to_win = questions_to_win;
}
public String toString()
{
return(super.toString()+" Game id :"+game_id+" Prize Money : "+prize_money+" Number of questions to win : "+questions_to_win);
}
}
//end of Trivia class
// Java TriviaLinkedList class
public class TriviaLinkedList {
// TriviaNode class
class TriviaNode{
private Trivia game;
private TriviaNode next;
public TriviaNode(Trivia game)
{
this.game = game;
next = null;
}
public TriviaNode(Trivia game,TriviaNode next)
{
this.game = game;
this.next = next;
}
public Trivia getGame()
{
return game;
}
public TriviaNode getNext()
{
return next;
}
public void setGame(Trivia game)
{
this.game = game;
}
public void setNext(TriviaNode next)
{
this.next = next;
}
public String toString()
{
return game.toString();
}
} // end of TriviaNode class
private TriviaNode head;
private int num_of_items;
public TriviaLinkedList()
{
head = null;
num_of_items = 0;
}
public TriviaNode getHead()
{
return head;
}
public int getNumberOfItems()
{
return num_of_items;
}
public void setHead(TriviaNode head)
{
this.head = head;
}
// method to insert a game in the list
public void insert(Trivia game)
{
if(head == null)
{
head = new TriviaNode(game);
}
else
{
TriviaNode newNode = new TriviaNode(game);
newNode.setNext(head);
head = newNode;
}
num_of_items++;
}
// method to delete the game in the list
public void delete(int game_id)
{
if(head == null)
{
System.out.println("\n Empty list ");
return;
}
if(head.getGame().getGameId() == game_id)
{
head = head.getNext();
num_of_items--;
System.out.println("\n Deleted game with id : "+game_id);
}else
{
TriviaNode temp = head;
while(temp.getNext() != null)
{
if(temp.getNext().getGame().getGameId() == game_id )
{
temp.setNext(temp.getNext().getNext());
System.out.println("\n Deleted game with id : "+game_id);
num_of_items--;
return;
}
temp = temp.getNext();
}
System.out.println("\n Game id : "+game_id+" not present in the list");
}
}
// method to display the list
public void display()
{
if(head == null)
System.out.println("\n Empty list");
else {
System.out.println("\n List contents : ");
TriviaNode temp= head;
while(temp!=null)
{
System.out.println(temp);
temp = temp.getNext();
}
}
}
}
// end of TriviaLinkedList class
// Java program to create Trivia object and insert them in linked list
public class TriviaLinkedListClient {
public static void main(String[] args) {
TriviaLinkedList list = new TriviaLinkedList(); // create the linked list
// insert elements
list.insert(new Trivia("Game 1",1,200,2));
list.insert(new Trivia("Game 2",2,300,1));
list.insert(new Trivia("Game 3",3,1000,5));
list.insert(new Trivia("Game 4",4,5000,10));
list.insert(new Trivia("Game 5",3,10000,20));
list.display();
}
}
==========================================================
output:
list contents "
Description : Game 5 Game id : 3 Prize Money : 10000.0 Number of questions to win : 20
Description : Game 4 Game id : 4 Prize Money : 5000.0 Number of questions to win : 10
Description : Game 5 Game id : 3 Prize Money : 1000.0 Number of questions to win : 5
Description : Game 5 Game id : 2 Prize Money : 300.0 Number of questions to win : 1
Description : Game 5 Game id : 1Prize Money : 200.0 Number of questions to win : 2
In JAVA, please In this module, you will combine your knowledge of class objects, inheritance and...
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