dreamzqy29

???首先我們先建立一個接口StudnetDao
? public interfaces StudentDao{
????????????public void insert(Student student);
}

再用一個類來實現該接口

public class?StudentDaoimp implements StudentDao{
?????????public void insert(Student student){
??????}
}

用一個工廠來產生對象

public class DaoFactory{
??????public static StudentDao getStudentDao(){
????????????return new StudentDaoimp();?????????
??????}
}

public class Student{
??????private int studentID;

???public int getStudentID() {
?????return studentID;
?}
?public void setStudentID(int age) {
?????this.studentID= studentID;
?}


}