Connection Pool Tutorial onEnable

    private final ComboPooledDataSource dataSource = new ComboPooledDataSource();  //The connection pool

    @Override
    public void onEnable() {
        saveResource("c3p0-0.9.5.1.jar", true);
        saveResource("mchange-commons-java-0.2.10.jar", true);
        saveResource("mysql-connector-java-5.1.37-bin.jar", true);

        getConfig().options().copyDefaults(true);
        getConfig().addDefault("database.driver-class", "com.mysql.jdbc.Driver");
        getConfig().addDefault("database.jdbc-url", "jdbc:mysql://<host>:<port>/<database>");
        getConfig().addDefault("database.host", "localhost");
        getConfig().addDefault("database.port", "3306");
        getConfig().addDefault("database.database", "database");
        getConfig().addDefault("database.user", "user");
        getConfig().addDefault("database.password", "password");
        getConfig().addDefault("database.checkout-timeout", 5000);
        saveConfig();

        ConfigurationSection databaseSection = getConfig().getConfigurationSection("database");
        String driverClass = databaseSection.getString("driver-class");
        String jdbcUrl = databaseSection.getString("jdbc-url");
        String host = databaseSection.getString("host");
        String port = databaseSection.getString("port");
        String database = databaseSection.getString("database");
        String user = databaseSection.getString("user");
        String password = databaseSection.getString("password");
        int checkoutTimeout = databaseSection.getInt("checkout-timeout");

        try {
            dataSource.setDriverClass(driverClass);
        } catch (PropertyVetoException e) {
            e.printStackTrace();
        }

        dataSource.setJdbcUrl(jdbcUrl.replace("<host>", host).replace("<port>", port).replace("<database>", database));
        dataSource.setUser(user);
        dataSource.setPassword(password);
        dataSource.setCheckoutTimeout(checkoutTimeout);
    }

    @Override
    public void onDisable() {
        dataSource.close();
    }