Team

package FootbalTeamGenerator;

import java.util.ArrayList;
import java.util.List;

public class Team {
    private String name;
    private List<Player> players;

    public Team(String name) {
        this.setName(name);
        this.players = new ArrayList<>();
    }

    private void setName(String name) {
        Validator.nameIsValid(name);
        this.name = name;
    }

    public String getName() {
        return this.name;
    }

    public void addPlayer(Player player) {
        this.players.add(player);

    }

    public void removePlayer(String playerName) {
        boolean removed = this.players
                .removeIf(p -> p.getName().equals(playerName));

        if (!removed) {
            throw new IllegalArgumentException
                    ("Player " + playerName + " is not in " + this.name + " team.");
        }
    }

    public double getRating() {
        double result =  Math.ceil(players.stream()
                .mapToDouble(Player::overallSkillLevel)
                .sum());

        result= result /players.size();

        return result;
    }

    @Override
    public String toString() {

        return  !players.isEmpty() ?
                String.format("%s - %.0f", this.name, this.getRating())
                : this.name + " - 0";
    }
}