Thread: How to make a team with min. 2 max 5 players with Objects and Arraylist?

instead of the arraylist I would use an array of maximum size 5, then I would create a variable that indicates how many players there are in the array. Then I would create add and remove methods.

Okay, but how do I link the two together?

So when I have my ArrayList with teams it knows that Team1 has Jens, Julia and Peter has its players

create a method that returns a String-> foreach element in the array add to a temp variable the name of the player -> return the temp variable

I hear what you are saying, but I can't really see it... Might be because I'm a beginner, but even though I use a for each I will just run through the Array but where is the link between team and its players?

ArrayList<Team> teams - Here I have TeamA on Pos0 and TeamB on Pos1

If i make an TeamA[3] array - {Kim, Julia, Peter} where is the link?

    public static void main (String []args){
        ArrayList<Team> teams = new ArrayList<>();
        Player[] PlayersA = new Player[3];
        PlayersA[0] = new Player("Kim");
        PlayersA[1] = new Player("Julia");
        PlayersA[2] = new Player("Peter");
        Team teamA = new Team("SOS", PlayersA);
        teams.add(teamA);
        System.out.println(teams.get(0).getTeamPlayers());
    }

public class Player {
 
    private String playerName;
 
    public Player (String playerName){
        this.playerName = playerName;
    }
    @Override
    public String toString() {
        return playerName;
    }
}

import java.util.ArrayList;
 
public class Team {
 
    private String teamName;
    private ArrayList<Player> TeamPlayers = new ArrayList<>();
    private int teamNumber;
    private int teamPoint;
    private int teamRank;
 
    public Team(String teamName, Player[] players) {
        this.teamName = teamName;
        for(Player p: players){
            addPlayer(p);
        }
    }
    public void addPlayer(Player player) {
        TeamPlayers.add(player);
    }
    public String getTeamName(){
        return teamName;
    }
 
    public String getTeamPlayers(){
        return TeamPlayers.get(0).toString() + " " + TeamPlayers.get(1).toString() + " "+ TeamPlayers.get(2).toString();
    }
 
}

Thank you very much, your reply lead me in a new direction.
- Unfortunately I now have a different problem, maybe you can see the fix to it.

It is repeating my Player Name: twice before I'm able to give in input and by this it is reducing my player list with 1 (as the first will be empte)

public static Tournament input(int numTeams) {
        Tournament tournament = new Tournament();
        for(int i = 0; i < numTeams; i++) {
            String teamName = readUserInput("Team name: ");
            Team team = new Team(teamName);
            tournament.getTeams().add(team);
 
            System.out.println("Hvor mange spillere er der på holdet?");
            int numPlayersPerTeam = scan.nextInt();
 
            for(int j = 0; j < numPlayersPerTeam; j++) {
                String playerName = readUserInput("Player name: ");
                Player player = new Player(playerName);
                team.getPlayers().add(player);
            }
        }
        return tournament;
    }

I found a solution to the issue. Thank you very much for your time and help along the way....

int numPlayersPerTeam = Integer.parseInt(readUserInput("Hvor mange spillere er der på holdet?"));

    public static Tournament input(int numTeams) {
        Tournament tournament = new Tournament();
        for (int i = 0; i < numTeams; i++) {
            String teamName = readUserInput("Team name: ");
            Team team = new Team(teamName);
            tournament.getTeams().add(team);
 
            int numPlayersPerTeam = Integer.parseInt(readUserInput("Hvor mange spillere er der på holdet?"));
 
            for (int j = 0; j < numPlayersPerTeam; j++) {
                String playerName = readUserInput("Player name: ");
                Player player = new Player(playerName);
                team.getPlayers().add(player);
            }
        }
        return tournament;
    }