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Thread: Urgent Class Project Help !!!!!!!!!!!!!

  1. #1
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    Unhappy Urgent Class Project Help !!!!!!!!!!!!!

    Hi I am having problems creating code for a particular part of my class project.

    In a java program all player information is to be stored in class called club. The club class must contain methods to register and remove players. The registration method consists of the club addding a unique registration number( integer) to an unregistered player ( use static field ) It should also contain a method to retrieve the players details given the ID.
    Below is my attempt but I am a bit confused

    public class Club
    {

    private static int IdOfPlayer=0;
    private ArrayList<String> arrList = new ArrayList<String>();

    private int removePlayer(int Id)
    {
    arrList.remove(Id);
    }

    private Player AddPlayer(Player player)
    {
    arrList.add(Player);
    IdOfPlayer++;
    }
    }


  2. #2
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    Default Re: Urgent Class Project Help !!!!!!!!!!!!!

    Please be more specific as to what is confusing you. Have you created a Player class? Your removePlayer method has a return type of int but nothing is returned; same goes for AddPlayer. The variable arrList can only have Strings added to it, so arrList.add(Player) wouldn't work for two reasons: 1) Player is not a String 2) Player is not the name of the instance of the class, rather it should be player.

  3. The Following User Says Thank You to KucerakJM For This Useful Post:

    thesoulpatchofBruce (April 10th, 2012)

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    Default Re: Urgent Class Project Help !!!!!!!!!!!!!

    Quote Originally Posted by thesoulpatchofBruce View Post
    Hi I am having problems creating code for a particular part of my class project.

    In a java program all player information is to be stored in class called club. The club class must contain methods to register and remove players. The registration method consists of the club addding a unique registration number( integer) to an unregistered player ( use static field ) It should also contain a method to retrieve the players details given the ID.
    Below is my attempt but I am a bit confused

    public class Club
    {

    private static int IdOfPlayer=0;
    private ArrayList<String> arrList = new ArrayList<String>();

    private int removePlayer(int Id)
    {
    arrList.remove(Id);
    }

    private Player AddPlayer(Player player)
    {
    arrList.add(Player);
    IdOfPlayer++;
    }
    }
    Hello thesoulpatchofBruce!
    It will help if you say what is confusing you and ask a specific question.
    But if you want to store Player objects in your ArrayList (arrList) you should "say" that, in its declaration. Now you will face a compilation error because you are trying to add a Player object in an ArrayList which stores Strings.

  5. The Following User Says Thank You to andreas90 For This Useful Post:

    thesoulpatchofBruce (April 10th, 2012)

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    Default Re: Urgent Class Project Help !!!!!!!!!!!!!

    Hi I am really new to java and apologise for the lack of clarity so my I am indeed trying to store the Player objects using an arraylist so I should declare <Player> where there is currently <String> ??

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    Default Re: Urgent Class Project Help !!!!!!!!!!!!!

    Quote Originally Posted by thesoulpatchofBruce View Post
    Hi I am really new to java and apologise for the lack of clarity so my I am indeed trying to store the Player objects using an arraylist so I should declare <Player> where there is currently <String> ??
    Yes you should. And you should make some more changes such as the signature of your methods as post #2 says. If you don't want them to return anything you should use the keyword void.

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