Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package edu.eci.arsw.blindway.persistence; import edu.eci.arsw.blindway.entities.BlindWayException; import edu.eci.arsw.blindway.game.Game; import java.util.concurrent.ConcurrentHashMap; import org.springframework.stereotype.Service; /** * * @author masterhugo */ @Service public class StubGamePersistence implements GamePersistence { private final ConcurrentHashMap<Integer, Game> gamesState; public StubGamePersistence() { this.gamesState = new ConcurrentHashMap<>(); } @Override public void createGame(int id, int n, int m) throws BlindWayException { if (gamesState.containsKey(id)) { throw new BlindWayException("The game " + id + " already exist."); } else { Game o = new Game(); o.createGame(n, m); gamesState.put(id, o); } } @Override public Game getGame(int id) throws BlindWayException { if (!gamesState.containsKey(id)) { throw new BlindWayException("The game " + id + " doesnt exist."); } else { return gamesState.get(id); } } }