public static void main(String[] args) throws InstantiationException, ClassNotFoundException, IllegalAccessException, SQLException, InterruptedException {

        
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/proba?&autoReconnect=true&maxReconnects=10&user=test&password=test");
            
            Thread.sleep(12000);
            
            Statement st = connection.createStatement();
            ResultSet rs = st.executeQuery("SELECT max(unixtime) FROM history_descrete");
            try{
                rs.next();
                
                System.out.println("max ut ="+rs.getString(1) );
                
            }finally{
                st.close();
            }

    }