Question

This java assignment will give you practice with classes, methods, and arrays.

Part 1: Player Class
Write a class named Player that stores a player’s name and the player’s high score.
A player is described by:
 player’s name
 player’s high score
In your class, include:
 instance data variables
 two constructors
 getters and setters
 include appropriate value checks when applicable
 a toString method
Part 2: PlayersList Class
Write a class that manages a list of up to 10 players and their high scores. Create a single array of type
Player that stores the players’ names and scores.
In your class, include:
 a single array of type Player to hold player name and score.
 a constructor
Your class should support the following features:
 Add a new player and score (up to 10 players).
method header: public void addPlayer()
 Print all the players’ names and their scores to the screen.
method header: public void printPlayers()
 Allow the user to enter a player’s name and output that player’s score or a message if that
player’s name has not been entered.
method header: public void lookupPlayer()
Notes
 You can include additional instance data variables if it is helpful. If you include additional
variables, include additional getters and setters as appropriate.
 I have provided a driver program ScoreManagementSystem.java you can use to test your code and sample output, of which yours should be the exact same.

//SAMPLE RUN   

Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
A
Enter name:
Alexander
Enter score:
300
Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
A
Enter name:
Michael
Enter score:
200
Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
P
Score Name
300 Alexander
200 Michael
Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
L
Enter name to look up.
George
Name not found.

Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
P
Score Name
300 Alexander
200 Michael
Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
L
Enter name to look up.
Michael
Michael's score = 200
Score Management System
Choose:
A)dd new player
P)rint all players
L)ookup a player's score
Q)uit
Q

Submission Instructions
 Execute the program and copy/paste the output that is produced by your program into the bottom
of the source code file, making it into a comment. I will run the programs myself to see the
output.
 Make sure the run "matches" your source. If the run you submit could not have come from the
source you submit, it will be graded as if you did not hand in a run.
 Use the Assignment Submission link to submit the source code file.
 Submit the following files:
Player.java
PlayersList.java
ScoreManagementSystem.java

//Here is the prototype for ScoreManagementSystem.java
import java.util.Scanner;

public class ScoreManagementSystem{
public static void main(String[] args)
   {
       Scanner input;
PlayerManager highScores = new PlayerManager();
input = new Scanner(System.in);
       String choice = "";

       // Main menu
       do
       {
           System.out.println();
           System.out.println();
           System.out.println("Score Management System");
           System.out.println("Choose:");
           System.out.println();
           System.out.println("A)dd new player");
           System.out.println("P)rint all players");
           System.out.println("L)ookup a player's score");
           System.out.println("Q)uit");
           System.out.println();
           choice = input.next();
       input.nextLine(); // Discard newline
          
if (choice.equalsIgnoreCase("A"))
               highScores.addPlayer();
           else if (choice.equalsIgnoreCase("P"))
               highScores.printPlayers();
           else if (choice.equalsIgnoreCase("L"))
               highScores.lookupPlayer();
           System.out.println();

       } while (!choice.equalsIgnoreCase("q"));
   }
}

Answer 1

//packages import java.util.*; //PlayerList class public class ScoreManagementSystem{    public static void main(String[] args)     {            Scanner input;            PlayerManager highScores = new PlayerManager();            input = new Scanner(System.in);            String choice = "";         // Main menu            do            {                System.out.println();                System.out.println();                System.out.println("Score Management System");                System.out.println("Choose:");                System.out.println();                System.out.println("A)dd new player");                System.out.println("P)rint all players");                System.out.println("L)ookup a player's score");                System.out.println("Q)uit");                System.out.println();                choice = input.next();                input.nextLine(); // Discard newline                           if (choice.equalsIgnoreCase("A"))                    highScores.addPlayer();                else if (choice.equalsIgnoreCase("P"))                    highScores.printPlayers();                else if (choice.equalsIgnoreCase("L"))                    highScores.lookupPlayer();                System.out.println();                       } while (!choice.equalsIgnoreCase("q"));    }    } class PlayerManager{    //instatnce varaibles    Player players[]; //array holds players    int index; //index keep tracking palyers    String name;    int score;    Scanner sc;    //construcer    public PlayerManager(){        players=new Player[10];        index=0;        sc=new Scanner(System.in);    }    //addplayer method    public void addPlayer(){        System.out.println("Enter name:");        name=sc.next();        System.out.println("Enter score:");        score=sc.nextInt();        players[index++]=new Player(name,score);    }    //printplayer method    public void printPlayers(){        System.out.println("Score \t Name");        for(int i=0;i<index;i++){            System.out.println(players[i].getName()+" \t "+players[i].getHighScore());        }        System.out.println();    }    //lookup method    public void lookupPlayer(){        System.out.println(" Enter name to look up.");        name=sc.next();        boolean found=false;        for(int i=0;i<index;i++){            //player found            if(players[i].getName().equals(name)){                found=true;                System.out.println(players[i].getName()+"\'s Score ="+players[i].getHighScore());            }        }        //palyer not found        if(!found){            System.out.println("Name not Found");        }    }    //rules    public static void main(String args[]){    } } class Player{    //instance variables    private String name;    private int highScore;    //default constructer    public Player(){        name=null;        highScore=0;    }    //constructer takes name and score values    public Player(String name,int highScore){        this.name=name;        this.highScore=highScore;    }    //set Methods    public void setName(String name){        this.name=name;    }    public void setHighScore(int score){        this.highScore=score;    }    //get methods    public String getName(){        return name;    }    public int getHighScore(){        return this.highScore;    } }

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