src/main/java/design/persistence/LeagueDatabase.java


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package design.persistence;

import design.model.League;

import java.io.IOException;

public interface LeagueDatabase {
    static LeagueDatabase instance() {
        return JSONLeagueDatabase.instance();
    }

    League getLeague(int id);

    League[] getLeagues();

    void addLeague(League league) throws IOException;

    void removeLeague(League league) throws IOException;

    void updateLeague(League league) throws IOException;
}