public static void createTables(){
        Connection con = null;
        try{
            Class.forName("com.mysql.jdbc.Driver");
            con = DriverManager.getConnection("jdbc:mysql://localhost/ablog","root","dick4");
            try{
                Statement st = con.createStatement();
                String t="CREATE TABLE attempts (indexnumber integer unsigned auto_increment not null, date date not null, buy boolean not null default '0', itemname text not null";

                st.executeUpdate(t);
                System.out.println("Table creation process successfully!");
            }
            catch (SQLException s){
                System.out.println("SQL statement "+which+" is not executed!");
            }
        }
        catch (Exception e){
            e.printStackTrace();
        }
    }