sad

package com.company;

class Game{

    public Game() {
        super();
    }
}

class Football extends Game{
    Team team;

    public Football(Team team) {
        this.team = team;
    }
}

class Player{
    String name;
    int jn, age, nm;

    public Player(String name, int jn, int age, int nm) {
        this.name = name;
        this.jn = jn;
        this.age = age;
        this.nm = nm;
    }
}

interface all_position{
    void Gk();
    void De();
    void Mid();
    void St();
}

class Team implements all_position{

    Player p;

    public Team(Player p) {
        this.p = p;
    }

    @Override
    public void Gk() {
        System.out.println("");
    }

    @Override
    public void D() {
        System.out.println("");
    }

    @Override
    public void M() {
        System.out.println("");
    }

    @Override
    public void S() {
        System.out.println("");
    }
}

public class Main {
    public static void main(String args[]) {

        Player p = new Player("n/a", 1, 18, 54);

        Team t = new Team(p);

        Football fb = new Football(t);

        Game gg = new Game(fb);
    }
}