定义学生类,该类有学号,姓名和系部三个成员变量,并用get和set方法进行属性封装。

public class Student {

private String sno;

private String sname;

private String sdept;

public String getSno() {
return sno;
}

public void setSno(String sno) {
this.sno = sno;
}

public String getSname() {
return sname;
}

public void setSname(String sname) {
this.sname = sname;
}

public String getSdept() {
return sdept;
}

public void setSdept(String sdept) {
this.sdept = sdept;
}
}

public interface IStudentDao {

public void insertStudent(Student stu);

public void deleteStudent(String sno);

public void updateStudent(Student stu);

public Student findStudentBySno(String sno);

public void displayStudentBySno(String sno);

public void displayAllStudent();
}

public class StudentDaoImpl implements IStudentDao {

@Override
public void insertStudent(Student stu) {
// TODO Auto-generated method stub

}

@Override
public void deleteStudent(String sno) {
// TODO Auto-generated method stub

}

@Override
public void updateStudent(Student stu) {
// TODO Auto-generated method stub

}

@Override
public Student findStudentBySno(String sno) {
// TODO Auto-generated method stub
return null;
}

@Override
public void displayStudentBySno(String sno) {
// TODO Auto-generated method stub

}

@Override
public void displayAllStudent() {
// TODO Auto-generated method stub

}

}

import java.util.Scanner;

public class MainClass {

IStudentDao studentDao = new StudentDaoImpl();

public int menu_select(Scanner scanner){

}

public void inputStudent(Student stu, Scanner scanner){

}

public void updateStudent(Student stu, Scanner scanner){

}

public static void main(String[] args) {

}
}