Hibernate connections are not closed even with C3P0 + explicit session.close()

Question

Hibernate connections to MySQL my db are not closing. After clicking 10 times in like 10 second, I get this connection statistics from MySQL Workbench (in my development mac

Answer 1

private static final ThreadLocal session = new ThreadLocal();

public static void closeSession() throws HibernateException {
    Session s = session.get();
    if (s != null) {
        s.close();
        session.remove();
    }
}

actually I am doing like this and it works