mysql>?create ?table ?student(id?int ?primary ?key ?auto_increment, firstname?varchar
(20), lastname?varchar (20));

package ?cn.itcast;

public ?class ?Student?implements ?java.io.Serializable {
??private ?static ?final ?long ?serialVersionUID = 1L;
??private ?Integer id;
??private ?String firstname;
??private ?String lastname;

??public ?String getFirstname() {
????return ?firstname;
??}

??public ?void ?setFirstname(String firstname) {
????this .firstname = firstname;
??}

??public ?Integer getId() {
????return ?id;
??}

??